Did you consider thawing LW out ... defrosting it so it doesn't keep freezing. lol

Hyper thread rings a bell to me ... over doing the cpu. Potentially an issue in itself.

Did you try deleting your LW Preferences folder whilst LW is closed; instructions here: Fixes for Limewire

Also, did you update your graphics card drivers recently?

Do you use the Resume button on all your downlds? If yes, try to refrain from doing so & the problem won't happen.