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• redefine shortcuts for keys being set to default after reboot

  - by MYA

  i am using PHPStorm editor on Ubuntu 14.04. Everything is so smooth that I am loving the experience (especially the workspace experience is amazing) however this bug is giving me headache... some of the editor's short-cuts clash with default Ubuntu keys (Alt + Ctrl + Left,Right,Up or Down arrow keys). I have changed the default keys to (super + Left,Right,Up and Down arrow keys) so they don't collide with my editor but after the reboot, Ubuntu changes are somehow reverting to default. This keeps comming again and again. i am sure there is a way out so therefore need help with that...

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• php.ini modifications has no effect on joomla

  - by user488736

  I have a netbook with a recently installed ubuntu server 12.04 64-bit. I have (only) installed Joomla on it (version 2.5) and now I am trying to tweak the php.ini settings so I can install jomsocial onto joomla. I have changed these settings: upload_max_filesize = 2M post_max_size = 8M to this: upload_max_filesize = 20M post_max_size = 20M in all php.ini-files in my system. Thats six files, found using 'locate': /etc/php5/apache2/php.ini /etc/php5/cli/php.ini /usr/share/doc/php5-common/examples/php.ini-development /usr/share/php5/php.ini-production /usr/share/php5/php.ini-production-dist /usr/share/php5/php.ini-production.cli I have double-checked that these files actually contain the new settings. Still, joomla does not recognize the new settings, stating that upload_max_filesize is still only 2M and post_max_size is still only 8M The same is true after a complete restart of the server. What am I doing wrong here?

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• Ubuntu not appearing in Boot Loader [new]

  - by Bryce

  I installed Ubuntu in a separate partition, along side Windows 8.1. However, Ubuntu/Grub does not appear in the Boot Loader. When I hold shift at startup, the regular Boot Loader (the one before I installed Ubuntu) appears with only Windows 8.1 as a boot option. I already tried the the Boot Repair from a Live USB, but nothing has changed. I have two partitions, one is a journaling file system (mounted on /) and the other is the swap. I read that it may be because Windows doesn't recognize the file system, but I don't know what to do about it. I don't know what I did wrong. Did I mount it in the wrong place? Any help would be appreciated. (If the problem is stupid, I apologize. I'm completely new to installing Ubuntu, and I could not find very detailed instructions.) Edit: In case this has any relevance, safe boot IS disabled.

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• Why I cannot mount ISO file from this .desktop file by `fuseiso`?

  - by Kevin Dong Nai Jia

  I want to mount iso files without root permission by fuseiso, and this is how to mount a iso file: fuseiso -p '/path/to/isofilename' '/media/isofilename' , so I make a .desktop file followed Freedesktop Standard (The Exec key) as bellow: #!/usr/bin/env xdg-open [Desktop Entry] Name=Mount ISO image Name[zh_TW]=??????? Exec=fuseiso -p %U "/media/$(basename %U)" Terminal=false MimeType=application/x-cd-image , but it failed. I think it failed because of $(basename %U), if it is changed to a fixed string, the iso file can be mounted. How can I solve this problem?

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• Locomotion-system with irregular IK

  - by htaunay

  Im having some trouble with locomtions (Unity3D asset) IK feet placement. I wouldn't call it "very bad", but it definitely isn't as smooth as the Locomotion System Examples. The strangest behavior (that is probably linked to the problem) are the rendered foot markers that "guess" where the characters next step will be. In the demo, they are smooth and stable. However, in my project, they keep flickering, as if Locomotion changed its "guess" every frame, and sometimes, the automatic defined step is too close to the previous step, or sometimes, too distant, creating a very irregular pattern. The configuration is (apparently)Identical to the human example in the demo, so I guessing the problem is my model and/or animation. Problem is, I can't figure out was it is =S Has anyone experienced the same problem? I uploaded a video of the bug to help interpreting the issue (excuse the HORRIBLE quality, I was in a hurry).

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• Mint 13 no longer using NVidia card after restart

  - by GenericUsrnme

  Here's the story; I bought a new graphics card, along with other parts, about a week ago. I put them in, install new drivers everything's working fine. Now after a restart I boot into some lovely 1024x768 resolution with only one screen on. I check in the NVidia X Server settings to see if my screen was changed there, there's nothing there except Application profiles and nvidia-settings. I check hardinfo to see if the card is actually recognised; VGA compatible controller: NVIDIA Corporation GK106 [GeForce GTX 660] (rev a1) (prog-if 00 [VGA controller]) I don't really know much about the graphics end of things so I'm not sure what I should be doing here to fix this, I don't even know what I should be looking FOR even, so any help is much appreciated! Thanks in advance

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• Ubuntu not booting from USB on laptop (no optical drive)

  - by Jamie

  I'm using a Kingston 16GB USB, with the Unetbootin program. (I've tried both downloading the installation iso manually and adding it, or using the program to download.) I've tried creating the bootable USB on an iMac, the laptop and also a desktop. I've booted into the setup of the laptop and changed the boot order to make sure it boots from that drive first. (There is no optical drive so that isn't a problem.) It's an Acer Aspire AS3810TZ. Upon booting it gives this message: SYSLINUX 4.03 2010-10-22 EDD Copyright (C) 1994-2010 H. Peter Anvin et al I get this no matter how I create the USB, it just sits there. I left the laptop for an hour and it hadn't moved. I've also tried on a different 4GB USB (Generic) and that did the same.

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• What did I do wrong when installed this theme?

  - by Qmal

  I have a problem installing a theme for my Ubuntu, note that I am very new to it and probably messed something up. Still it seems to me that I did everything like it was stated in the INSTALL file. Theme: http://opendesktop.org/content/show.php/?content=140562 So I downloaded the *.zip package, unzipped it in home/.themes folder and changed Controls and Borders inside my theme preference. Still my result is pretty poor. You can look at the image, it looks nothing like what in the screenshot of the author. I also installed fonts running sudo apt-get install ttf-mscorefonts-installer and tried to install GTK2 engine as sudo apt-get install gtk2-engines-murrine gtk2-engines-pixbuf, but it showed that 0 files was modified since I already have it. Please tell me what did I did wrong so I can fix that :) (It seems that I can't upload images yet, no rep. I can give you link tho) http://postimage.org/image/1zhibxx5w/full/

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• Switching hosting from Google Apps to GoDaddy

  - by Sahir M.

  I am in a pickle here. I just bought a hosting service from GoDaddy and I already have a domain registered with Google Apps. So I went into the domain control center from Google Apps and I changed the nameservers to point to GoDaddy's and then I deleted all the A records and also removed the www and main CNAME. Then I created an A record with host "@" which points to the IP address I got from GoDaddy (this is the server address I see under the category Server in the GoDaddy Hosting Control Center). Also, I see that in this domain center, the domain forwarding is set to forward to my address "www.domainsite.com". So right now when I go to my website I see the error "This website is temporarily unavailable, please try again later." Does anyone know how to set this up properly or know what problem I could be having? Thanks!

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• Session and Cache are By Reference

  Recently a colleague remarked that if he got a List of some type out of the ASP.NET Cache, and changed an item, the Cache item would also change.That is correct. Session (InProc) , Cache and Application all return "live" references. A good writeup on this can be found by friend and fellow MVP Rick Strahl here:http://www.west-wind.com/Weblog/posts/1214.aspxIf you do not want this behavior, you need to either delete the Session / Cache / Application object and replace it with what you want later, or...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• Session and Cache are By Reference

  Recently a colleague remarked that if he got a List of some type out of the ASP.NET Cache, and changed an item, the Cache item would also change.That is correct. Session (InProc) , Cache and Application all return "live" references. A good writeup on this can be found by friend and fellow MVP Rick Strahl here:http://www.west-wind.com/Weblog/posts/1214.aspxIf you do not want this behavior, you need to either delete the Session / Cache / Application object and replace it with what you want later, or...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• Collision Detection problems in Voxel Engine (XNA)

  - by Darestium

  I am creating a minecraft like terrain engine in XNA and have had some collision problems for quite some time. I have checked and changed my code based on other peoples collision code and I still have the same problem. It always seems to be off by about a block. for instance, if I walk across a bridge which is one block high I fall through it. Also, if you walk towards a "row" of blocks like this: You are able to stand "inside" the left most one, and you collide with nothing in the right most side (where there is no block and is not visible on this image). Here is all my collision code: private void Move(GameTime gameTime, Vector3 direction) { float speed = playermovespeed * (float)gameTime.ElapsedGameTime.TotalSeconds; Matrix rotationMatrix = Matrix.CreateRotationY(player.Camera.LeftRightRotation); Vector3 rotatedVector = Vector3.Transform(direction, rotationMatrix); rotatedVector.Normalize(); Vector3 testVector = rotatedVector; testVector.Normalize(); Vector3 movePosition = player.position + testVector * speed; Vector3 midBodyPoint = movePosition + new Vector3(0, -0.7f, 0); Vector3 headPosition = movePosition + new Vector3(0, 0.1f, 0); if (!world.GetBlock(movePosition).IsSolid && !world.GetBlock(midBodyPoint).IsSolid && !world.GetBlock(headPosition).IsSolid) { player.position += rotatedVector * speed; } //player.position += rotatedVector * speed; } ... public void UpdatePosition(GameTime gameTime) { player.velocity.Y += playergravity * (float)gameTime.ElapsedGameTime.TotalSeconds; Vector3 footPosition = player.Position + new Vector3(0f, -1.5f, 0f); Vector3 headPosition = player.Position + new Vector3(0f, 0.1f, 0f); // If the block below the player is solid the Y velocity should be zero if (world.GetBlock(footPosition).IsSolid || world.GetBlock(headPosition).IsSolid) { player.velocity.Y = 0; } UpdateJump(gameTime); UpdateCounter(gameTime); ProcessInput(gameTime); player.Position = player.Position + player.velocity * (float)gameTime.ElapsedGameTime.TotalSeconds; velocity = Vector3.Zero; } and the one and only function in the camera class: protected void CalculateView() { Matrix rotationMatrix = Matrix.CreateRotationX(upDownRotation) * Matrix.CreateRotationY(leftRightRotation); lookVector = Vector3.Transform(Vector3.Forward, rotationMatrix); cameraFinalTarget = Position + lookVector; Vector3 cameraRotatedUpVector = Vector3.Transform(Vector3.Up, rotationMatrix); viewMatrix = Matrix.CreateLookAt(Position, cameraFinalTarget, cameraRotatedUpVector); } which is called when the rotation variables are changed: public float LeftRightRotation { get { return leftRightRotation; } set { leftRightRotation = value; CalculateView(); } } public float UpDownRotation { get { return upDownRotation; } set { upDownRotation = value; CalculateView(); } } World class: public Block GetBlock(int x, int y, int z) { if (InBounds(x, y, z)) { Vector3i regionalPosition = GetRegionalPosition(x, y, z); Vector3i region = GetRegionPosition(x, y, z); return regions[region.X, region.Y, region.Z].Blocks[regionalPosition.X, regionalPosition.Y, regionalPosition.Z]; } return new Block(BlockType.none); } public Vector3i GetRegionPosition(int x, int y, int z) { int regionx = x == 0 ? 0 : x / Variables.REGION_SIZE_X; int regiony = y == 0 ? 0 : y / Variables.REGION_SIZE_Y; int regionz = z == 0 ? 0 : z / Variables.REGION_SIZE_Z; return new Vector3i(regionx, regiony, regionz); } public Vector3i GetRegionalPosition(int x, int y, int z) { int regionx = x == 0 ? 0 : x / Variables.REGION_SIZE_X; int X = x % Variables.REGION_SIZE_X; int regiony = y == 0 ? 0 : y / Variables.REGION_SIZE_Y; int Y = y % Variables.REGION_SIZE_Y; int regionz = z == 0 ? 0 : z / Variables.REGION_SIZE_Z; int Z = z % Variables.REGION_SIZE_Z; return new Vector3i(X, Y, Z); } Any ideas how to fix this problem? EDIT 1: Graphic of the problem: EDIT 2 GetBlock, Vector3 version: public Block GetBlock(Vector3 position) { int x = (int)Math.Floor(position.X); int y = (int)Math.Floor(position.Y); int z = (int)Math.Ceiling(position.Z); Block block = GetBlock(x, y, z); return block; } Now, the thing is I tested the theroy that the Z is always "off by one" and by ceiling the value it actually works as intended. Altough it still could be greatly more accurate (when you go down holes you can see through the sides, and I doubt it will work with negitive positions). I also does not feel clean Flooring the X and Y values and just Ceiling the Z. I am surely not doing something correctly still.

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• Why appending to a list in Scala should have O(n) time complexity?

  - by Jubbat

  I am learning Scala at the moment and I just read that the execution time of the append operation for a list (:+) grows linearly with the size of the list. Appending to a list seems like a pretty common operation. Why should the idiomatic way to do this be prepending the components and then reversing the list? It can't also be a design failure as implementation could be changed at any point. From my point of view, both prepending and appending should be O(1). Is there any legitimate reason for this?

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• Terminal flashing between current and previous screen

  - by cjordan1

  I just upgraded from Ubuntu 12.04 to 14.04. After upgrading the terminal will sometimes, but not always, flash between the current screen and the previous screen. Here are some examples: The output of an 'ls' command will flash on and off the screen. But when I press enter to start a new line, sometimes--but not always--the output of ls will stop flashing and instead the newline will begin flashing. Sometimes vim will start flashing between the current place and a previous place, such as right after a search. This also happens when I opened just sh within a bash terminal. (I was hoping the issue was just with my .bashrc, though I haven't changed it in months and didn't have any issues in 12.04.) This is incredibly annoying, and has made the terminal essentially unusable.Unfortunately, google-ing for a half hour hasn't shown anyone running into similar problems, either on 14.04, other versions of ubuntu,or other versions of linux.

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• GRUB is not Booting Correctly

  - by msknapp

  I have a PC with three hard disks. Windows 7 is installed on the first, Ubuntu 14.04 is installed on the third. After I re-booted, it went straight to Windows 7. So I tried explicitly telling my PC to boot using the third hard disk, but that just takes me to the grub rescue prompt. I followed Scott Severence's instructions here to try and recover. Essentially, I updated grub, reinstalled grub, and then updated it again. After re-booting, absolutely nothing had changed. So instead I tried using the boot-repair tool. In the past it had failed for me, saying that I had programs running and it could not unmount drives, when I was running nothing. I never figured out how to solve that problem, but it went away when I bought another hard drive and used that for my Ubuntu installation, I don't know why. In any case, I ran the boot-repair tool and this time it said it was successful. First time for everything right? I re-booted, only to be taken straight to the grub rescue prompt. So I changed my BIOS settings to use the third hard disk for boot start up. That is the same hard drive where I have Ubuntu and grub installed, and the same one that the grub-repair tool told me to use. It still took me straight to the grub rescue prompt. So I went from not being able to boot Ubuntu, to not being able to boot either OS installed on my system. Thanks boot-repair! Boot repair gave me this URL for future troubleshooting: http://paste.ubuntu.com/8131669 When I try to boot from the third hard disk, this is my console: Loading Operating System ... error: attempt to read or write outside of disk 'hd0'. Entering rescue mode... grub rescue> grub rescue> set cmdpath=(hd0) prefix=(hd0,gpt2)/boot/grub root=hd0,gpt2 grub rescue> ls (hd0) (hd0,gpt3) (hd0,gpt2) (hd0,gpt1) (hd1) (hd2) (hd2,gpt2) (hd2,gpt1) (hd3) Those values look correct to me. I have also experimented with changing some of those values, but 'insmod normal' always throws the same error. Somebody please tell me how to fix this. I have tried everything, reinstalling grub, and running boot-repair. =========================== Update: I think the problem might be that the ubuntu installer did not partition my hard disk correctly. I booted from live USB and then launched gparted and looked at how it partitioned things. This is what gparted says: Partition, File System, Size, Used, Unused, Flags /dev/sda1 (!), unknown, 1.00 MiB, ---, ---, bios_grub /dev/sda2, ext4, 2.71 TiB, 47.30 GiB, 2.67 TiB, /dev/sda3, linux-swap, 16.00 GiB, 0.00 B, 16.00 GiB, So that first line looks problematic. It is supposed to be the /boot partition. However, it was given only 1 MiB? I am assuming that MiB is actually supposed to mean megabyte, no idea why that 'i' is there. It also says the file system is unknown. I read the answer by andrew here, and he says he had to do a custom install, explicitly configuring the boot partition. So I think that maybe Ubuntu's installer has a bug in it, where it does not set up the boot partition correctly if you are not installing on the first hard disk in your computer. I am going to try reinstalling with a custom partition scheme. I read elsewhere (askubuntu won't let me post another link) that I don't even need a /boot partition any more. So instead of following Andrew's instructions ver batim, I'm first going to try having just two partitions: one for /, and another for my 16GB swap space. Both as primary partitions. The first will be formatted as ext4. If that doesn't work, I may try again using /boot. ======================== So I did my custom install with no /boot partition, and it did not work. When I rebooted, I had an error message saying that some address did not exist. So for the hundredth time, I booted from the live USB, and ran boot-repair. Now I get this message GPT detected. Please create a BIOS-Boot partition (>1MB, unformatted filesystem, bios_grub flag). This can be performed via tools such as Gparted. Then try again. I feel like I'm running in circles and nobody will help me.

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• Play 2 with Scala or Java?

  - by Mik378

  I want to develop a big personal project using Play 2 Framework. I am expert with Java language but it seems, with the few articles I read that Play 2 works perfectly and especially with Scala. I've never worked with Scala but I already learned concept as closures, functional programming etc... Learning it would be interesting. I am really motivated for but I wonder if there are some people who have started coding with Play2/Java and have changed for Play2/Scala that could explain their major concrete advantages.

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• Change screen resolution from terminal

  - by Keith

  When I enabled my Nvidia graphics card, it changed the resolution of my screen to larger than my screen. As the result I cannot access any functions that were previously on the right side of my screen. How do I undo this? I originally had 8.04 and was able to change the resolution to whatever I wanted. I'm a new user and can copy and paste commands from a post to terminal mode but that's about it. I have no idea what they are or what they mean.

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• Do subdomains need to be defined through domain registrar?

  - by Johnny

  I have bought a new domain name from GoDaddy. Let's say it is abcd.com. On GoDaddy's DNS Managing page, I changed A(Host) part to @ = 74.125.232.215 which is www.google.co.uk's IP address. Now if I type www.abcd.com, it directly goes to www.google.co.uk. But if I type http://test.abcd.com, it cannot be loaded. Do I need to define every subdomain through GoDaddy? Is this how it works? P.S. Amazon EC2 directly generates a subdomain for users to reach their virtual PCs. It cannot be domain registrar dependant. P.S.2. Same question for using "www2" at the start of url.

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• Did Microsoft Add Wiretapping Capability to Skype?

  Ryan Gallagher, writing for Slate, put two and two together from a lot of no comments. He noted that back in 2007, German police forces said that they couldn't tap into Skype calls because of of its strong encryption and complicated peer-to-peer network connections; in fact, Skype bluntly stated at the time that, due to its encryption and architecture techniques, it couldn't conduct wiretaps. But that may have changed. Gallagher cited a Forbes article that claims the hacker community is talking about recent changes to Skype's architecture and whether they will allow users to be wiretapped. ...

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• Verify uniqueness of new content

  - by rogerkk

  I'm working on a review site, where there is a minor issue with almost duplicate reviews across items. Just a few words are changed. It would be very nice to be able to uncover these duplicates before they are approved by a moderator, and I'm hoping someone could chime in on the best strategy to get there. The site is running Ruby on Rails on a Postgres database and using Thinking Sphinx for search (all on Heroku), and so far the best option I see is to be pulling all the reviews out of the db and using a module like amatch to compare the strings. Not very efficient, so in this case I guess I'll have to limit the number/age of reviews to scan for dupes. Anyone got a better idea?

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• Is there some application to download files from popular file hosting websites?

  - by Tim

  I was wondering if there are some applications for downloading files from some popular hosting websites, automating the procedure of waiting and fetching links and downloading files, once we give the applications the links? Examples of such websites are Rapidshare, Uploading, Megaupload, Filesonic, Fileserver, Hotfiles, Depositefiles, iFile. But the applications are not necessarily applicable to all of them. Thanks and regards! ADDED: I just tried slimrat. It failed to download files from rapidshare. Can it be because the website of rapidshare has changed recently and the parsing functionality for their website by slimrat is not up-to-date yet.

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• Blender 2.64, what are the actual hot-keys for certain actions

  - by Shivan Dragon

  I know this sounds mega lame but I've looked for hotkeys for certain actions, first in the appliation's User Settings (where I didn't find them) then in the official documentation (where I did find some of them but they're not the right ones): http://wiki.blender.org/index.php/Doc:2.4/Manual/3D_interaction/Transform_Control/Manipulators (Ctrl - Alt - S is recommended for Scale, but instead it opens the Save As... window - I think these changed in the latest versions, but they forgot to update the docs) So then, what are the hot keys for: selecting translate manipulator selecting rotate manipulator selecting scale manipulator In Edit mode: select vertex (editing) select edges (editing) select faces (editing) thanks.

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• How do I select DWM or fluxbox to start on login?

  - by axe

  I am trying to setup DWM in Ubuntu 10.10. The package is successfully built - and now I am trying to get it up and running. I created the dwm.desktop file with the proper text and the path to the dwm exec is correct. On login screen, I can see dwm as a alternate session : but if I select it, still gnome starts. I even tried another window manager (fluxbox) - same problem. I can see and select it in the login screen, but gnome starts up. Trying gconftool-2 -s /desktop/gnome/session/required_components/windowmanager dwm --type string also does nothing. Killing the windows manager just restarts it - even if I chvt first. Also, don't see the xinit daemon running. Any ideas ? This setup was trivial in Debian, and older versions of Ubuntu. What changed ? I am guessing gnome integration is to blame - but am clueless as of now.

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• Should I use my domain registrar's nameserver or find an alternative?

  - by Fazal

  I've recently been moving my client's sites as well as my own and my friends to a cloud server instance I've set up. I don't have a nameserver setup on my instance because I'm not sure how to deploy and manage that side of things yet. I'm using the default nameservers where possible for the sites and just changing the A record DNS settings to point at the server. Some clients are complaining that the sites are running slower then before (since I changed nameservers back to the defaults). Some of the domain registrars are a nightmare to deal with and I can't convince some of my clients to leave them. Is there a sort of paid service I can use instead?

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• ASP.NET Menu, NavBar And Pager Performance Improvements v2010 vol 1

  Check out the improvements weve made to some of our ASP.NET controls in the DXperience v2010.1 release. We changed the rendering of our ASP.NET AJAX Menu, Navigation Pane and Pager controls. The controls now use semantic rendering combined with advanced CSS styles, which results in a dramatic decrease of HTML output, improved performance and a reduction in the servers workload. Also, several of our other ASP.NET controls like the ASPxGridView and ASPxScheduler also benefit because The primary...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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