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• Seamless Mode Not Working Correctly in Virtual Box

  - by Jeremy

  I run Ubuntu Desktop in a VirtualBox seamless mode, hosted on Windows 7. I recently upgraded from 11.10 to 12.04 and seamless mode no longer works correctly. I have re-installed guest extensions. The problem is that the Ubuntu desktop wallpaper is shown, effectively blocking the Windows desktop. I can bring Windows apps to the foreground, but as soon as I bring any Ubuntu window to the foreground, all the windows apps will disappear, hidden by the ubuntu desktop even if I activated an Ubuntu window in a different monitor. So, it is not very much different from full-screen mode at this time. I suspect if I could turn off the Ubuntu desktop or wallpaper this would be a sufficient workaround (this is basically what Seamless mode is) but that does not seem to be possible within Ubuntu itself. [Jeremy doesn't specify system config, but I can confirm I'm seeing this behavior in Win 7 64-bit with both 32-bit and 64-bit guests. Giovanni sees the same thing on his laptop running Vista Ultimate 64 bit after upgrading his 32-bit guest to 12.04 (forums.virtualbox.org p225407, requires logging in with your free Oracle account). I was using vbox 4.1.14r77440 and matching Guest Additions. I upgraded to 4.1.16-78094 vbox+additions. Still a problem. And I filed launchpad bug 999929 to see if I can get feedback from developers. – tbc0] Any other ideas?

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• x11vnc is slow, but using only 10% of available bandwidth

  - by mmm

  I am using x11vnc over 15Mbit/s network with 20ms latency. When the screen is changing a lot x11vnc is slow - for example when I switch a tab in a browser, it takes almost two seconds until the view is fully redrawn. The strange thing is that max connection speed of x11vnc is even during slow redrawing only about 10% of the available bandwidth. Why is x11vnc not using available bandwidth to speed the redrawing up? For example scp is using 100% of available bandwidth without problems. How can I identify what is the bottleneck for x11vnc on my system? So far I think: 10% network usage = network is not a bottleneck fb read rate: 601 MB/sec = reading fb is not a bottleneck Any ideas how can I further profile x11vnc and find out what is causing a slowdown? For example is there any switch for x11vnc to show how much data it is handling and how long it takes to grab a screen, process and compress it and send it over the network?

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• Windows 7 won't read from NAS on LAN

  - by Alfy

  I've got a Linkstation NAS drive on a local network. Having just got a new laptop with Windows 7 Home Professional, I can no longer read anything of the drive. I've tried accessing the drive using \192.168.1.55\share, using ftp programs such as WinSCP, filezilla and even using firefox to hit ftp://192.168.1.55. The really annoying thing is that through these methods I can see the files on the drive, counting out any kind of connection issues. I can navigate through the NAS file system, but as soon as I try and copy a file off the NAS, things just stop working. Accessing the drive through a Windows XP machine works fine. So far I've tried: Disabling firewalls Adding the LmCompatibilityLevel key to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa Using the 40 - 56 bit encryption instead of the 128 bit. Has anyone got any suggestions of what I can check or try? This is driving me crazy and I'm totally out of ideas?

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• Extension icons in Chrome for Mac have disappeared

  - by Seth Williamson

  On my new MacBook Pro running Snow Leopard 10.6.2 and Google Chrome for Mac, 5.0.307.11 beta, some (but not all) of the icons for extensions have disappeared. I can tell SOMETHING is still there, because the space is occupied and you can see it indent as you mouse over it. You can also see the name of the extension pop up in a balloon below. But the extension icon is invisible and the extension itself doesn't work. Right now it's happened with Google Translate, the show-in-IE extension, Wikipedia Chromium, Send with GMail and Clip to Evernote. The LastPass and Feedly extension icons are still visible. Any ideas on how to get them back and stop this from happening again? Seth Williamson

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• samsung HMX-H100P camcorder and video encoding with mencoder

  - by jskg

  Hi everyone, my background is totally not related to video stuff so pardon my newbie style. I own a samsung HMX-H100P camcorder and I'm trying to encode videos to be uploaded to Youtube and Vimeo. First problem: videos generated by the camera with no processing appear like this: http://www.youtube.com/watch?v=AANbl_DTuzE when I play them with Totem(Linux) or VideoLan. Second problem: When I try to encode the videos produced by the camera using mencoder I get the video at the resolution I chose but those ugly lines and lagging are still present. Here's the command I use: mencoder $inputFile -aspect 16:9 -of lavf -lavfopts format=psp -oac lavc -ovc lavc -lavcopts aglobal=1:vglobal=1:coder=0:vcodec=libx264:acodec=libfaac:vbitrate=4500:abitrate=128 -vf scale=1280:720 -ofps 25000/1001 -o $outputFile Any ideas? Thanks in advance

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• Disabling kextcache on 10.5.8 and 10.6.3

  - by Jeff Kelley

  We use Radmind to manage our Mac OS X loadsets and, as such, often run into difficulty when new OS releases come out due to, among other things, updated kernel extensions. The workflow in the past (OS revisions <= 10.4) was to delete the kernel extension cache, update the extensions, and then reboot. That worked just fine, as the system would re-create missing caches on boot. In Leopard, you need to delete the caches after replacing the kernel extensions with their new versions, as the system will automatically start creating them when you replace them; the only way to ensure that you don't have invalid extensions cached is to delete the cache before rebooting. I'm looking for a way to prevent the kernel extensions cache from being re-created until the next reboot. If you modify the contents of /System/Library/Extensions/, kextcache will start up automatically. I've looked through /System/Library/LaunchDaemons/ and other places, but I can't find whatever it is that's starting kextcache. Any ideas?

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• SSIS DSN Not Showing as ODBC Data Source

  - by user1114330

  I have been following the directions here: http://social.msdn.microsoft.com/Forums/en-US/sqlintegrationservices/thread/05ccd778-b78c-4a83-a10a-c4ae412cc6e4 And ran into a problem where my System DSN is not showing up as a ODBC provider. I found this which seemed promising: http://support.microsoft.com/kb/2000277 I was not able to delete the key but followed but I did what was suggested: "If unable to delete the key, double-click the key and erase the Data value entered. Once done, the value should read ' (value not set) '" However, after following the instructions my System DSN still does not appear as an option. The USER DSN however does show...has shown but does not work as I get a permissions error. Any ideas?

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• Identical traffic

  - by Walter White

  Hi all, I am running an application server and logging all requests for analysis purposes later. One interesting trend I noticed last night was, I had a visitor from Texas on FIOS share identical traffic with bluecoat in California. What would cause the traffic to be identical? For every request the visitor made, bluecoat made one subsequently within milliseconds of his request. If it is caching, why would there be identical requests? Wouldn't it go through the cache / proxy on their end, and I would only see the proxied request? I'm just curious, this is an interesting pattern that shows similarities of a DDoS attack, but with far fewer resources. Is it possible that the visitor had malware on their computer? Any other ideas? Walter

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• Unable to remove broken Exchange 2003 installation (SBS 2003)

  - by Austin ''Danger'' Powers

  We have a non-functional Exchange 2003 installation on our SBS 2003 server that I am trying to uninstall. So far we have never used, and will never use, Exchange on this server- all we need is to remove it from the system (as it is installed on a partition which we want to merge with the main data partition to increase network storage capacity). Attempting to remove it using Add/Remove Programs produces the following error: When doing a search in ADUC to see which users still have a mailbox associated with them, it seems to only be the domain administrator account: As the Exchange installation is broken, it is not possible to run either System Manager or Exchange 5.5 Administrator to make mailbox changes. How can I forcibly remove a mailbox (which does not need to be salvaged or backed up), to allow the uninstall of Exchange to proceed? Any ideas would be appreciated!

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• .inputrc settings: delete-char and [] keybindings not working

  - by tanascius

  Hello, I am using mingw under windows. When I am using ruby (irb) my 'special' characters like []{} and \ are not working. This is because of my german keyboard, where these keys are used together with AltGr (Alt + Ctrl). I found a solution for this here or here. Now, when I add the line "\M-[": "[" to my .inputrc file the delete-key no longer works. It is defined as usual: "\e[3~": delete-char Pressing delete just returns [3, while Ctrl + v, delete returns ^[[3~ as expected. Somehow these two definitions in .inputrc do not work together. Any ideas? EDIT: It is only the delete key that is not working, my other bindings all work, like: "\e[1~": beginning-of-line # home (ok) "\e[2~": paste-from-clipboard # insert (ok) "\e[3~": delete-char # delete (PROBLEM) "\e[4~": end-of-line # end (ok) "\e[5~": history-search-backward # pageup (ok) "\e[6~": history-search-forward # pagedown (ok)

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• Whew.... what a week!

  - by [email protected]

  Last week was a busy week for the UPK and Tutor teams at Oracle. It started with the the Collaborate Conference in Las Vegas and ended with our first UPK and Tutor Customer Advisory Board (CAB) meeting at Oracle HQ. The Collaborate Conference is a yearly event sponsored by three of the largest Oracle User Groups. • Oracle Applications User Group (OAUG) • Independent Oracle User Group (IOUG) • Quest - International User Group The User Groups are completely user run organizations with Oracle participation. If you've never attended a conference, time to start planning for the 2011 event in Orlando! If that's out of your reach, there are many regional and industry user groups that meet on a regular basis. They offer a great way to get involved, network with other users, and increase your knowledge around the Oracle applications. For a list of groups near you, check out the Oracle User Group Center. I'll add that the biggest meeting of Oracle users is at the Oracle Open World Conference in San Francisco in September, where we will have many UPK & Tutor focused development and customer sessions. More information on Oracle Open World will be forthcoming over the next few months. We hope to see many of you there! The CAB was a first for the UPK and Tutor team. Although we speak with customers regularly, this gave us an opportunity to meet in a more formal setting to discuss industry trends, business issues, and the direction of the products. Members serve a 2 year term and are required to attend 2 meetings per year, one in person, one via phone. We have some tweaking to do to our meeting format (most members wanted it to be longer!), but the overwhelming consensus was that it was a great success. There were many experiences and ideas shared and the wheels of the UPK and Tutor Development teams have been turning ever since. I'm sure you will see some of these discussions result in new product features over time. What a great week!

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• Added and removed a custom service, but the keybinding is still stuck?

  - by Mathletics

  I created a custom service in Automator to open a new finder window from whatever app I'm in, and assigned it to CMD+E (I was trying to get the WIN+E effect from Windows.) I tried it for a few days, restarted the computer daily, but found it didn't work that well. So I removed the keybinding, then removed the service, deleted the Automator file, etc. So, now the custom service is gone, but CMD+E still goes to the finder from whatever app I'm in! I added a custom shortcut to BBEdit in an attempt to restore its CMD+E action (find with selection), but it STILL goes to the finder! I just want CMD+E to do what it normally does in each app. Any ideas?

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• DNS Server Spoofed Request Amplification DDoS - Prevention

  - by Shackrock

  I've been conducting security scans, and a new one popped up for me: DNS Server Spoofed Request Amplification DDoS The remote DNS server answers to any request. It is possible to query the name servers (NS) of the root zone ('.') and get an answer which is bigger than the original request. By spoofing the source IP address, a remote attacker can leverage this 'amplification' to launch a denial of service attack against a third-party host using the remote DNS server. General Solution: Restrict access to your DNS server from public network or reconfigure it to reject such queries. I'm hosting my own DNS for my website. I'm not sure what the solution is here... I'm really looking for some concrete detailed steps to patch this, but haven't found any yet. Any ideas? CentOS5 with WHM and CPanel. Also see: http://securitytnt.com/dns-amplification-attack/

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• send key combination via local network to other mac

  - by choise

  Hi, after a other mac or macbook is connected with a mini display port to a new generation imac you can switch between the imac and the other connected mac pressing cmd+F2(brightness up) using the keyboard of the imac. i connect my macbook to my imac, switch to the macbook and connect the bluetooth keyboard and mouse of my imac to my macbook. after that i'm not able to switch back to my imac, because the keyboard is used on my macbook. i have a second mouse connected to my imac, so i'd would be cool to switch views and control my imac with my second mouse. is it possible to send the shortcut cmd+F2 to my imac from my macbook? via command line or something? using apple script? all ideas are welcome, thanks!

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• How do you create large, growable, shared filesystems on Linux at AWS?

  - by Reece

  What are acceptable/reasonable/best ways to provide large, growable, shared storage at AWS, exposed as a single filesystem? We're currently making 1TB EBS volumes ~biweekly and NFS exporting with no_subtree_check and nohide. In this setup, distinct exports appear under a single mount on the client. This arrangement does not scale well. The options we've considered: LVM2 with ext4. resize2fs is too slow. Btrfs on Linux. not obviously ready for prime time yet. ZFS on Linux. not obviously ready for prime time yet (although LLNL uses it) ZFS on Solaris. future of this combo is uncertain (to me), and new OS in the mix glusterfs. heard mostly good but two scary (and maybe old?) stories. The ideal solution would provide sharing, a single fs view, easy expandability, snapshots, and replication. Thanks for sharing ideas and experience.

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• Limit which processes a user can restart with supervisor?

  - by dvcolgan

  I have used supervisor to manage a Gunicorn process running a Django site, though this question could pertain to anything being managed by supervisor. Previously I was the only person managing and using our server, and supervisor just ran as root and I would use sudo to run supervisorctl restart myapp when needed. Now our server has to support multiple users working on different sites, and each project needs to be able to restart their own gunicorn processes without being able to restart other users' processes. I followed this blog post: http://drumcoder.co.uk/blog/2010/nov/24/running-supervisorctl-non-root/ and was able to allow non-root users to use supervisorctl, but now anyone can restart anyone else's processes. From the looks of it, supervisor doesn't have a way of doing per-user access control. Anyone have any ideas on how to allow users to restart only their own processes without root?

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• Is Windows XP Pro not a good Hyper-V guest citizen?

  - by Magnus

  On my Windows Server 2008 R2 w. the Hyper-V role, I have these guest VMs: 3 x Windows Server 2008 R2 2 x Windows Server 2003 x86 2 x Windows 7 x64 1 x Windows XP Pro x86 In general, all machines are very fast and responsive. However, the Windows XP Pro guest is very sluggish. It can take up to 2 minutes to connect to the console/or a RD session. Sometimes it can "go into sleep" for several minutes. I have tried to add a 2nd CPU and more memory, but it doesn't help. When the issue happens, it's more or less impossible to get a responsive Task Manager up to analyze which process is hogging the CPU. But I have noticed that it can be various processes; lsass.exe, crss.exe etc. Integration Services is installed. Microsoft Security Essentials is installed, but I have tried without it, no difference. Any ideas?

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• Print full path of files and sizes with find in Linux

  - by cat pants

  Here are the specs: Find all files in / modified after the modification time of /tmp/test, exclude /proc and /sys from the search, and print the full path of the file along with human readable size. Here is what I have so far: find / \( -path /proc -o -path /sys \) -prune -o -newer /tmp/test -exec ls -lh {} \; | less The issue is that the full path doesn't get printed. Unfortunately, ls doesn't support printing the full path! And all solutions I have found that show how to print the full path suggest using find. :| Any ideas? Thanks!

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• Default permissions for courier imap folders

  - by JoeCoder

  I'm using courier imap. When a mail client creates a new folder, it's created on the filesystem with 640 permission. I need it to be writable by the group, or 660. I currently have /etc/courier/imapd IMAP_UMASK=007, but that's not enough. I'm not sure what else to try. Any ideas? I'm using ubuntu server 12.04. EDIT: I added a 50pt bounty to this. For an acceptable answer, I need a way to make it work from a package in a standard repo. If I download source and compile it myself, it won't be automatically kept up to date with security fixes. If I don't find a better answer, I'll add code to the admin script to call another sudo approved script to chmod -R the whole directory before every change. But this is kind of hack-ish.

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• Mail Enabled Sharepoint 2010 Loop Detected

  - by vlannoob

  I have setup a small Sharepoint 2010 deployment and it is working fine, for now. I have run through one of the more popular step by step guides to mail enable the install and what I have is internal and external mail going to my mail enabled list hitting my Exchange 2010 server (on another Win2k8R2 box) and sitting in the submissions queue with a Loop Detected error and they progres no further. Everything appears OK as per the guide. I have setup an SMTP role on the Sharepoint box, as per the guide. I have setup a new Send Conenctor on the Exchange 2010 server, as per the guide. Any ideas on troubleshooting here?

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• Couldn't make Angry birds to work on wine

  - by Ashfame

  I could run Notepad++ easily but I fail to run the Angry bird exe. Whenever I open the exe, I see one of my screen flickrs a bit (as lines and not the whole screen) and nothing happens. Any ideas? Edit: Output of wine angrybirds.exe fixme:actctx:parse_depend_manifests Could not find dependent assembly L"Microsoft.VC80.CRT" (8.0.50727.4053) fixme:actctx:parse_depend_manifests Could not find dependent assembly L"Microsoft.VC90.CRT" (9.0.21022.8) err:module:import_dll Library MSVCP90.dll (which is needed by L"C:\\windows\\system32\\AppUpWrapper.dll") not found err:module:import_dll Library AppUpWrapper.dll (which is needed by L"C:\\windows\\system32\\angrybirds.exe") not found err:module:LdrInitializeThunk Main exe initialization for L"C:\\windows\\system32\\angrybirds.exe" failed, status c0000135 I think it didn't even install. I manually dropped those files in the folder but still no gain. Edit: Progress I dropped the file MSVCP90.dll manually and now this is what I get in the output fixme:actctx:parse_depend_manifests Could not find dependent assembly L"Microsoft.VC80.CRT" (8.0.50727.4053) fixme:actctx:parse_depend_manifests Could not find dependent assembly L"Microsoft.VC90.CRT" (9.0.21022.8) fixme:heap:HeapSetInformation 0x541000 0 0x32fd48 4 fixme:heap:HeapSetInformation (nil) 1 (nil) 0 EXCEPTION: Failed to open data/scripts/starLimits.lua wine: Unhandled exception 0x40000015 at address 0x7b880023:0x78b271d0 (thread 0009), starting debugger... fixme:msvcr90:__clean_type_info_names_internal (0x10267694) stub fixme:msvcr90:__clean_type_info_names_internal (0x78506644) stub ashfame@ashfame-desktop:~$ Process of pid=0008 has terminated No process loaded, cannot execute 'echo Modules:' Cannot get info on module while no process is loaded No process loaded, cannot execute 'echo Threads:' process tid prio (all id:s are in hex) 0000000e services.exe 00000014 0 00000010 0 0000000f 0 00000011 winedevice.exe 00000018 0 00000016 0 00000013 0 00000012 0 00000019 explorer.exe 0000001a 0 You must be attached to a process to run this command. No process loaded, cannot execute 'detach' and there the terminal hangs (I mean I would have to Ctrl + C to get out). It shows up the famous message, that it needs to close down. Edit: Just to let you know that I am still stuck at it. I don't use wine for anything else, so I am ready to do a clean install of wine and everything if anyone is willing to provide me instructions.

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• How do you deal with translating theory into practice?

  - by Mr. Shickadance

  Hello all! Being a computer scientist in a research field I am often tasked with working alongside professionals outside of the software domain (think math people, electrical engineer etc), and then translating their theories and ideas into real-world implementations. I often find it difficult when they present a theoretical problem which appears to be somewhat disconnected from reality. I am not saying that the theory is bogus, only that it is difficult to translate into real-world situations. For example, recently I have been working with software defined radios. We are exploring many different areas, but often the math specialists in my group would present a problem which is heavily grounded in theory (signal processing, physics, whatever). I often struggle at times where it is hard to draw direct parallels between the theory and the real-world implementation that I need to develop. Say we are working on an energy detector, the theory person in my group would say "you need to measure the noise variance with no signal present." This leads me to think "how the hell do I isolate noise from a signal in reality?" There are many examples, but I hope you see where I am going. So, my question is how does one deal with implementation of theoretical concepts when the theory seems detached from reality? Or at least when the connections are not so clear. Or perhaps, the person with the 'theory' may be ignorant of real restrictions? Note: I found this to be a hard question to ask - hopefully you are following me. If you have suggestions on how I could improve it, by all means let me know! Thanks for looking! EDIT: To be a bit more clear, I understand in situations like this that I must learn that specific domain myself to an extent (i.e. signal processing), but I am more concerned with when those theoretical concepts do not appear to be as grounded in practice as one would like.

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• How to create systemd.service in Fedora 16 (x86_64)?

  - by marverix

  I have big problem with creating service in new way - by systemctl (systemd.service) in Fedora 16. I wonna to create very simple service for minidlna server. I have created new file called minidlna.service in /lib/systemd/system/ and here is how it's looks like: [Unit] Description=Mini DLNA [Service] Type=oneshot ExecStart=/usr/sbin/minidlna [Install] WantedBy=multi-user.target Unfortunately systemctl status minidlna.service prints: Loaded: loaded (/lib/systemd/system/minidlna.service; enabled) Active: inactive (dead) since Sat, 03 Dec 2011 20:49:23 +0100; 9s ago Main PID: 1580 (code=exited, status=0/SUCCESS) CGroup: name=systemd:/system/minidlna.service Any ideas how to fix it? Cheers!

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• How to deal with static utility classes when designing for testability

  - by Benedikt

  We are trying to design our system to be testable and in most parts developed using TDD. Currently we are trying to solve the following problem: In various places it is necessary for us to use static helper methods like ImageIO and URLEncoder (both standard Java API) and various other libraries that consist mostly of static methods (like the Apache Commons libraries). But it is extremely difficult to test those methods that use such static helper classes. I have several ideas for solving this problem: Use a mock framework that can mock static classes (like PowerMock). This may be the simplest solution but somehow feels like giving up. Create instantiable wrapper classes around all those static utilities so they can be injected into the classes that use them. This sounds like a relatively clean solution but I fear we'll end up creating an awful lot of those wrapper classes. Extract every call to these static helper classes into a function that can be overridden and test a subclass of the class I actually want to test. But I keep thinking that this just has to be a problem that many people have to face when doing TDD - so there must already be solutions for this problem. What is the best strategy to keep classes that use these static helpers testable?

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• How to simulate slow internet connection

  - by V-Light

  I currently deploy with GAE (google app engine) and I try to implement some AJAX validation. So I got a couple text-fields and "spinners" (ajax loaders) which should be displayed when an AJAX request is sent. But I deploy on my local computer (localhost), so the GAE SDK reacts very fast on any request. It takes about 50-70 ms(miliseconds) to perform the whole ajax request, which is far far away from the real. Is there a way to somehow simulate slow Internet connection? I just want to see how my "spinners" work. I want to test some ajax setting (jquery) about timeouts, errors and so on... Any ideas ?

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