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Not sure if it's a problem of VirtualBox, but when trying to install Win7x64 SP1 Windows stuck with the following message:

Fatal error C0000034 applying update operation 282 of 117809 (_00000…)

This method helped!

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http://www.webpagetest.org/
http://loadimpact.com/pageanalyzer.php

You can use Coral free CDN to off-load the WordPress attachments (usually images). In order to use Coral you need to add ".nyud.net" to the site DNS address. For example, http://www.alekz.net will become http://www.alekz.net.nyud.net. Coral is usually too slow to serve all static content, so the most effective solution would be to use it only for the biggest files.

Here's a simple solution. Add the following to functions.php of your current theme:

add_filter ('wp_get_attachment_url', 'freecdn_url');

function freecdn_url ($url)
{
    if (! is_attachment () ) return $url;
    $cdn_url = ".nyud.net";
    $decomposed_url = explode ("/", $url);
    $decomposed_url[2] =  $decomposed_url[2] . $cdn_url;
    $url = implode("/", $decomposed_url);
    return $url;
}

Your theme (e.g. the bundled "TwentyTen") must use wp_get_attachment_url(), of course. If not – you got the idea, didn't you? ;-)

Also, you can use freecdn_url () function to rewrite any URL you want to download from Coral.

The file "cwd" under /proc/pid is a symbolic link to the "current working directory":

The result is:

Of course, you can use any other process name instead of php.

And here's a "dynamic" version:
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Found another cPanel application which you can safely turn off in order to safe some bytes and cycles.

By default dcpumon runs every 5 min to log CPU usage ("top" output) :

and stores the data into /var/log/dcpumon

You can view the report with dcpumonview command:

Funny but quite fast method to multiply numbers:
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The AWG (American Wire Gauge) to mm conversion table:
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Two methods:

1. Using regedit:

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Lsa
"LimitBlankPasswordUse"=dword:00000000

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa
"LimitBlankPasswordUse"=dword:00000000

2. Using Local Security Policy:

Control Panel -> Administrative Tools -> Local Security Policy (run as system administrator)
Local Security Policy -> Local Policies -> Security Options
Set "Accounts: Limit local account use of blank passwords to console logon only" to Disable

Useful links:

• Allow Blank Passwords for Vista Remote Desktop
• Change password policy settings
• Remote Desktop Connection: frequently asked questions
• What are server authentication options?
• How to complete a Windows Vista Remote Desktop connection

• cpfw2ns – Checkpoint to Juniper converter (outdated?)
• FWdoc – CheckPoint converter, verifier, parser
• Fortinet – Checkpoint – Cisco – Netscreen converter
• Cisco Security Conversion Tool (SCT) – CheckPoint – ASA
• CPRules – CheckPoint to HTML converter