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• Dell e4300 Random Beeps

  - by Mikey.B

  I’ve noticed that my Dell e4300 Laptop will randomly beep every now and then. The symptoms are virtually identical to the issue described here: http://en.community.dell.com/support-forums/laptop/f/3518/t/19314488.aspx Any ideas why? I thought it might be related to hard drive activity so I downloaded the western digital disk utility and all tests check out fine. It’s not a big deal and it only beeps once every few days. I just want to make sure there isn’t a larger problem looming. =) -M

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• Reverse DNS does not match SMTP Banner

  - by Bastien974

  Hi all, I had this Warning with mxtoolbox. I know that it's not necessarily a big problem, but since we are having lots of issue with email delivery, I want to check everything. I have a Exchange server 07 + Sonicwall. My FQDN is office.mydomain.ca for send/receive connectors. When I try : telnet office.mydomain.ca 25 -- 220 MYSERVER.mydomain.local Microsoft ESMTP MAIL Service ready at Fri, 7 May 2010 10:34:36 -0400 I can change my SMTP Banner in the Sonicwall, but I don't know what to write, if there is a specific syntax or what can be the consequence if it doesn't work. Thanks for your help.

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• How can I have my Windows keymap on Mac?

  - by Sebastian Hoitz

  On Mac, to get a "{" for example, you have to press OPTION key plus 8 to get a curly brace. But on Windows it is ALT-GR plus 7. Another example: On Windows I can press CTRL and Backspace to remove one whole word. On Mac it is OPTION + Backspace. Is there a way I can remap these Mac-driven behavior to be more Windows-like? Because this is, as a very long Windows user, a big burden on me to have such a different keyboard layout. Edit: I'm using a german keyboard layout.

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• Coldfusion 8 crash

  - by Denis Topa

  I have a very big problem with coldfusion 8 on Windows server 2008 with IIS7. They are in production server and sometimes the the site is not available, I have to manually end the jrun.exe process from task manager and then the site is available. I realize that the process jrun.exe has abut 1.3Gb of memory used at the time it crash's. It happens 2-3 times a day, I have looking in the coldfusion logs and I did not found anything strange beside some warnings that some job exceeded the 300 sec of time execution. I forgot to mention that coldfusion is a 32bit application but the windows is a 64bit, this may be the problem? I'm not such good in coldfusion, so If someone knows how to troubleshoot please let me know Thanks!

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• How to securely generate memorable passwords?

  - by Tim

  Whenever I need new passwords I use some tools to generate those, preferable memorable passwords, but I've been wondering how secure this might actually be. Using The xkcd random number generator is probably pretty bad, cat /dev/random is probably pretty good, but generating memorable passwords seems a bit more tricky. Whenever a program generates a memorable password, it only uses a subset of the total password space available, and it is not clear to me how big this space is. Of course a long password should help in this case, but if the `memorable' part of the program is too predictable, your passwords are not very good in the end. TL;DR: how secure are memorable password generators, given the fact that `memorable' passwords are a subset of total password space? Some tools I know of: pwgen -- seems ok, but passwords are not too memorable Mac Password Assistant - generates memorable passwords but it is unclear to me how this works.

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• Toshiba Satellite laptop connected to HDTV

  - by VANJ

  I have a Toshiba Satellite A505-S6014 laptop running Windows 7 64-bit connected to a Toshiba Regza 42" HDTV with an HDMI cable. The laptop has a 16" display and the screen resolution is set to the maximum/recommended of 1366x768. The display output is set to "LCD+HDMI". The display looks fine on the laptop screen but on the TV it is not a "full screen" display, it leaves a good 3" black border all around all 4 edges. When I switch the display to "HDMI only", it is now too big for the TV screen and some of my desktop icons are no longer visible off to the side. What is the best way to set this up? I guess that since a 16" and 42" displays have different native resolutions, a LCD+HDMI mode is defaulting to the optimal size for the 16". But when I set it to HDMI Only, what is the appropriate resolution for a 42" full screen display? Thanks

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• Bluetooth device won't re-add after being removed (Windows 7)

  - by HericDenis

  I've got a SBH52 headset, it works fine on my android phone, then I tried to use it with my Windows 7 PC, then it won't work because Microsoft Windows dosen't have native support for A2DP connections and one of the answers on the previous link said that removing the device from "devices and printers", running this software and then re-add the device would solve the problem. But the big problem is that they won't pair again: I tried, hopelessly, the suggested fixes from Windows, it won't work. By the way, it is Windows 7 (x64), it just looks like Windows 8. I had this problem once many years ago with other PC and Bluetooth device, I remember it had something to do with drivers that were not removed and I tried to delete them from somewhere, and as far as I remember it worked, but no idea how. In short, how can I pair it again with my PC?

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• Website pages very slow to load on first access

  - by Merianos Nikos

  I have a production web server that makes sites to be very slow when load for first time. After the first time all connections are normal and fast. In the following screen you can see the first test I have run for a random site in my server: and here you can see the result of the second time request: As you can see there is a big change in the second load of the same page. Here is the page load time graph: My problem is that I don't really know anything about Red Had Linux server, and also I don't know where can I start. Can somebody to help me ? I like to find out the solution for the long time "wait" in connection. I know that my question is very minimal, but you can always ask me to give you information about the server.

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• Debian Squeeze Upgrade Breaks Apache SSL

  - by PP

  I upgraded my Debian from Lenny to Squeeze. BIG MISTAKE. Now I get: [Tue Feb 08 16:34:57 2011] [error] Server should be SSL-aware but has no certificate configured [Hint: SSLCertificateFile] ((null):0) littered throughout /var/log/apache2/error.log. How to fix? Looking through a mess of forums it is easy to see that Apache changed the way it reads configurations around 2.2.13. Great. But not great for me or the millions of other web administrators who now have web servers that simply won't start, and an error message that says NOTHING about the problem or how to fix. Anybody else actually solved this issue? I had perfectly working virtual servers with SSL before (for years actually).

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• <solved> MySQL Replication A->B->C

  - by nonus25

  I was setting the MySQL Replication for master - slave/master - slave and Replication for master - slave its works fine but when i have enable this option in my.cnf log-slave-updates=1 for updating the master bin log my replications is starting be slower and the time Seconds_Behind_Master is growing. I use innodb engine but the DB is big. Any idea how i can improve the replication, looks like the network is not the issue. Also i was think to use binlog_format=ROW but master is using default setting for replication 'statement' and i cant reset master ;) Thanks ...

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• How to create Isolated test environment

  - by Safin09

  Hi All, I am very new to the VMware world. We have VMWare vCenter 4 in the production environment but we have created multiple VLAN through Cisco Switch. I want know, how I can create an isolated test environment for software testing purpose only, so anything will happen in that test vLan will not make trouble in the production environment. "Host-only networking" is the solution or there is a better way to achieve this result? My requirements A. Hosts should be able to access Internet and a Network Share drive but not Production network B. Hosts should connect each other inside the Virtual LAN C. I should be able to take automatic or periodic backup or snapshoot and deploy snapshot when necessary. Whatever your answer is, please give me steps, how to do, if possible. If I need to purchase anything, I am ready to do but I don't want to spend big money. Many thanks in advance.

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• A desktop Wiki editor/viewer: is there anything out there?

  - by MrBertie

  I'm a big user of wikis, mainly Dokuwiki, I really like the clarity and ease of use of simple text files. However all good wikis seem to require a web-server of some kind; has anyone come across a good desktop wiki editor/viewer that work with plain-text files, and allow me to work with wiki text files just like any other document file type (note: not a desktop wiki running inside a local webserver) Before you rush to suggest (I hope!) I have done months of research on this and have tried Wixi, Wikidpad, zulupad.... Any ideas anyone?

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• What's the largest message size modern email systems generally support?

  - by Phil Hollenback

  I know that Yahoo and Google mail support 25MB email attachments. I have an idea from somewhere that 10MB email messages are generally supported by modern email systems. So if I'm sending an email between two arbitrary users on the internet, what's the safe upper bound on message size? 1MB? 10MB? 25MB? I know that one answer is 'don't send big emails, use some sort of drop box'. I'm looking for a guideline if you are limited to only using regular smtp email.

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• Microsoft Entourage/Exchange Server problem: all objects disappeared from server - still in some form on the client

  - by splattne

  One of our employees works with Entourage on his MacBook Pro (OSX 10.6) accessing Exchange Server 2007. Last Friday morning, I think while working over a VPN, Entourage (I think it was Entourage) deleted all his objects (mail, calendar, contacts) on the server and while creating a lot of strange folders (starting with underscores) on the client. The local data seems to be there, but not in a consistent form. Since the user's mailbox is rather big, I suspect, that there was some kind of "move" operation which did not complete. I tried to export the data, but the export stops because of a corrupted object. Is there a tool or another way to export or retrieve the local data? Edit - FYI: we solved the problem getting his data from the previous night's backup.

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• How do special folders work on Windows 7?

  - by Martin

  Hello, I did something silly and accidentally moved my my special folders (My Documents, My Music etc.) to the Desktop. Once I noticed my mistake I quickly moved them back. But now my System acts erratically. It continuously creates new empty folders on my Desktop. And I have now two folders named "My Pictures" in my home directory. One of which is magically linked to the one in Desktop while on the command line one one is actually visible. If I delete the superfluous folders on Desktop then the explorer crashes. It is all a big mess. Of course I checked HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\explorer\User Shell Folders and it looks all ok there. So here the question: As anybody got any informations on how Windows 7 handles the special folders which might help be clean up the mess? I am well versed in using both the command line or the registry editor.

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• Content server backups

  - by Dan Sosedoff

  What is the best way to backup data on content servers? For example, I have 15 servers that just have content, no applications running on it. Each server has a 250 GB hard drive. So, it's a pretty big amount of data. All the data have external access (via HTTP). So, the question is: what methodology is best in my case? The most useful method I know is cross-backup: when each server contains its own data and backup of one other server. But, there is significant reduction in total capacity. RAID?

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• Screen broken of mi laptop, start with an external monitor

  - by Widrogo

  hi now I have a big problem my brother broken the screen of mi laptop, now the replacement of my screen arrives in three weeks, now I can not lose three weeks because my homework be in my memory, now I need start the laptop with external monitor, I want to know if there is a way to boot from the boot my laptop because I have dual boot and password I can not access my laptop with an external monitor for this reason. Now there is a way to start my laptop directly to an external monitor. I look for a solution, I need to remove my broken laptop screen and automatically will recognize the vga monitor but did not work me now i look for a solution and find that i need

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• how to best config for synflood setup in csf but web response still fast

  - by Binh Nguyen

  my server down random every day 4-5 time cause get high load very quick.. I have install csf and with some config server now stable.. load around 5. BUT the big isuse is : the real user very hard to access website specially from IE browser you can test at xaluan.com the flowing is config using in csf: SYNFLOOD = "1" SYNFLOOD_RATE = "100/s" SYNFLOOD_BURST = "10" CONNLIMIT = "80;30" PORTFLOOD = "80;tcp;70;5" CT_LIMIT = "29" # other config may same as default i playing around with this config for a week but still not work around.. If increase the rate SYNFLOOD_RATE = "140/s" or more.. the website response very fast.. be side have bad effect of server load increase so fast normal 20 and may be up to few hundred in peck time .. my need is response time fast but load still low.. please help thanks ps: server runing nginx frontend, apache, mysql, php ,, the home page has around 70 elements which will cached in browser in fist time access..

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• Make Apache to listen in multiple IPs

  - by Enrique Becerra

  Hi I'm in a big LAN, which is behind a proxy/firewall I'm working with an apache/php/mysql application, which is hosted in a small server besides my workstation. This server is connected to the LAN also and is behind the proxy: The server has a local IP assigned: 10.64.x.x Also, this server has a public IP assigned (or redirected from within the proxy/firewall) which is: 200.41.x.x I can't access public IP from LAN, but I can ping to the public IP from outside the building How should I configure Apache to listen also for public IP and open the 80 port for people accessing from outside the building?. It is set now to Listen 10.64.x.x:80 Thanks a lot in advance,

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• RAID1 Hard drives with Intel Controller

  - by Dave_H

  I have an older server with 2 35GB hard drives arranged as a RAID-1 drive. I have 3 open bays, I'd like to add 2 more hard drives to the open bays and have all 4 drives configured as a RAID-1 drive that Windows sees as 1 larger drive. Is this possible? If not, the new drives are 2x as big as the old drives, is it possible to replace 1 of the old drives and rebuild then replace the second drive and rebuild and somehow expand the array to use all of the available space? The server is using an Intel hardware raid controller, the software interface is Intel Storage Console v2.12.

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• easy Switching to open folders on a mac

  - by Charles

  How do I easily switch to an open folder on a mac? In windows, which I'm used to using, I can see all my opened folders in my vertical taskbar, all i need to do to switch to another window is click on the folder in the task bar. There's no taskbar in mac, and when i have a lot of folders opened, ie, lots of finder windows, how can I switch between them? The way i'm doing it is, i put expose on an active corner and switch that way. However that's still damn hard, because first i have to bring up expose, and then find my window. The folders are placed in a random position between opened apps, the folders are not in a list, and on a big screen i have to scan the whole screen in order to find the one i want... etc. Is it really this hard just to switch to a different folder on a mac? :(

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• Feed Reader's - Looking for some suggestions

  - by bryan_ruiz

  I am doing my best to make it a point to keep an eye on some blogs of people in my industry, and am looking for a good feed reader. I use chrome. I live in chrome, and if I am not in Chrome, I am using xterm. Yet, I do get my tweets in Pidgin and do all my talking discussion from that. Maybe it makes sense to integrate something in that? I see web feed readers as a bit too distant to make good use of it (eg, have to open a page, and less 'in your face'). Although, I am a big fan of google stuff and use google apps and google voice and google cals and google docs, etc.. So how is feedburner? I like to preserver time. It'd be interesting if I could read my feeds offline on my laptop or ChromeOS CR-48 with offline websites? Well, would love to hear what you guys are doing and suggest.

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• I can't uninstall Git

  - by Tom

  I was researching Git so I downloaded the Windows version to test it out on a repository on GitHub. After about 30 minutes I couldn't work out how to use it, so I decided I probably wouldn't need a distributed repository as our projects aren't that big and went back to what I know - SVN. (I thought) I uninstalled all the Git related stuff I'd put on my PC, but have now got an irritating problem where if I open any folders I get an error message saying: Hello [ERROR] Could not find git path As you can imagine, this is a real pain, does anyone have any ideas on how to fix it?

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• Could we build a mega-processor out of superconductors?

  - by Carson Myers

  A superconductor, once cooled below a critical temperature, loses all of its electrical resistance and therefore becomes 100% efficient. This means that when a current flows through a superconductor, none of the energy is lost to heat or light. Theoretically, could we build a processor out of superconductive materials, that could effectively run at, oh I don't know, say, 300ghz? or 5,000ghz? Since a superconductive circuit is 100% efficient, this means that once supplied with electricity, the source of power could be completely removed from the circuit and the current would continue to flow forever. So if we made all the components inside a computer out of superconductive materials, could we get away with only supplying power to the peripherals and save a-whole-lot on energy, while dramatically increasing computing speed? Might this be one of the next big breakthroughs in computing? What do you think?

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• Bonjour/DNS Service Discovery queries

  - by senloe

  I'm trying to implement dns service discovery in my application (no, I'm not asking for a programmatic answer). What I believe is one of my big pain points is generating the query. I know I need to send out a multicast broadcast on port 5353 and want to look for devices of type _ipp._tcp and _print._tcp, but I don't know what the question section needs to look like. For example, in SSDP I sent out a query that looks like the following: "M-SEARCH * HTTP/1.1\r\n" "HOST: 239.255.255.250:1900\r\n" + "MAN: \"ssdp:discover\"\r\n" "ST: urn:schemas-upnp-org:device:Printer:1\r\n" "MX: 5000\r\n\r\n" From what I know about a DNS query I need to send something like: "_ipp.tcp,all,all" but I know there needs to be more. Any pointers to documentation, etc would be greatly appreciated! update rfc1035 appears to contain promising information re the message structure.

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