After letting my computer fall asleep and waking it up again LimeWire froze. I don't know why, but please double check LimeWire's behaviour if e.g. the computer clock appears to make a jump forward of several hours or if the network connection appears to be gone for a while, or if the user's IP address changes. Because there must be something that caused LimeWire to freeze in this situation; something is apparently not as gracefully handled as desirable.