If you get
few working proxy or it takes
too long to test the proxies, you should use this patch. Then you can set the
Max Thread from the default 5 to 50. It will boost the testing speed by 10 times.
For Windows XP / Vista / Win7 UsersWindows only allows 10 or 25 simultaneous connections from XP SP2 in order to improve the security, but an immediate downside is the fact that it impacts the multi-thread Internet programs such as Forum Proxy Leecher (fourmproxyleecher.com), Elite Proxy Switcher (eliteproxyswitcher.com) and Socks Proxy Checker (socksproxychecker.com). You can use this patch to fix it.
Download TCP-Z here:
http://www.softpedia.com/get/Tweak/Network-Tweak/TCP-Z.shtml
About how to use TCP-Z:

For Windows XP
Open TCP-Z -> Click the tab
Patch -> Patch File Tcpip.sys -> Set the
New Value to 100 ->
Apple -> restart your computer -> Done. You need not to use the software again unless Microsoft restores the Tcpip.sys file.
For Windows Vista and Win7
Open TCP-Z -> Click the tab
Patch -> Patch Memory -> Set the
New Value to 100 ->
Apple -> Done. You need to use TCP-Z every time before testing the proxies.