It keeps shutting down my comp and restarting!!

Basically i have a perfectly fine computer but since I got limewire, and only when i use limewire, after about 8 minutes of downloading something, my computer automatically restarts. when it reboots, it says that there has been a serious error regarding the following files.

C:/WINDOWS/minidump/mini041104-01.dmp
(by the way, what is a .dmp file?)
C:/DOCUME`1/USER(userid)1.NEW/LOCALS`1/Temp/WER1.tmp.dir00/sysdata.xml
(and what is an .xml file)

Does This have anything to do with limewire, does anyone share this problem? Please help, Thanks.

By the way, if i send the error report to microsoft i get sent to http://oca.microsoft.com/en/Response.asp?SID=77

[ursula]

First...
There is no such thing as, "a perfectly fine computer."

Second...

Please post again with info on your system...
Processor
Memory
Operating System version
LimeWire version
Connection type
Are you using it at a school

???

Processor:P4 2.0Ghz
Memory: 512MB, it is only about 1 year old
Operating System version:win XP home
LimeWire version:3.8.10
Connection type: Cable
Are you using it at a school: NOPE
I hope this helps, thanks