Windows reboots when closing Limewire
 

Your Operating System - W2K Pro SP4
Your Internet connection (56K, Cable, DSL) - DSL
The exact error message, if one pops up - No error Message
What version of Java are you running? Java 2 SE v1.4.1
What version of Limewire? v4.0.8
What do you do before it crashes? Close Limewire
What software is running when using Limewire (lower right of screen icons)? Norton Antivirus
What did you install most recently? Cucusoft - then uninstalled due to other issues since resolved.
How much RAM do you have? 256MB
Hard Disk capacity? Free space? 15GB
What security software (antivirus/firewall/etc) is running? Norton
Have you checked your computer for viruses using up to date trustable (Mcafee/Norton ETrust/etc) antivirus software? Regularly

Basically, when I disconnect from then close Limewire my pc reboots itself as soon as I click Close, regardless of having downloaded anything. I was having a problem with selected items queueing and not downloading, but once I completely removed Cucusoft & Limewire from my system then reinstalled Limewire it was fine. Now, about 9 times out of ten my pc will reboot when I close.

weird problem try the beta version of limewire hope it'll help solve your problem.