Hi there!
I noticed this crash too! It hurt me for _5_ times today.
I am running 10.1.4 and had the latest LimeWire (2.3 I believe, although what was strange, it had buttons to also search for slashdot news and stuff which are gone after I downloaded a news version)
My machine is a iMac DV 400 Slot Loading with 386 MB ram.
When LimeWire locks up I am first not able to bring it to the foreground by clicking on its window or its window icon in the Dock. (Clicking the window Icon in the dock would just do nothing)
However when I try to click the Dock *Icon* of LimeWire then my computer instantly locks up.
So that seems to be the culprit for now.
Next time I get such a crash I will try to force quit LimeWire either through the gui or through the cli.
Could it be that this lockup somehow either crashes the window server (but I can still movie the mouse) or deadlocks it so that it waits for a specific message from limewire?
Thanks a lot,
cu Martin