1. Try this Tip: Purge the Downloads Queue!

2. Try deleting your LW Preferences folder whilst LW is closed; instructions here: Point #2 & 3 in Fixes for Limewire (sample image included at bottom of page.)

Doing these might stop LW stressing your computer that causes this to happen.

3. Go to Norbie's world & he has a general computer problems section. There is probably an out of date driver or something that is only triggered by LW when it runs. http://www.norbiesworld.co.uk/Forums/c=6.html