I found Limewire unable to resume downloads after force-quitting it or after a crash.
Fair enough, I thougt but just now after a usual cmd-q quit Limewire has "forgotten" all my downloads.
I'm a little nervous because there's more than 3 GB in that "Incomplete" folder of mine and I don't like the thought of trashing all that stuff again...
How can I tell Limewire to resume downloading files in my Incomplete Folder?

Consider yourself screwed.

LimeWire won't resume those files. That's why you should never forcefully quit LimeWire. The next version saves the resume data more frequently, but this version will not resume those files. (This got to be Allah's punishment for you being a greedy non-believer.)

just resume a new search (copy and past from the folder). when LW findes a match, it will start downloading from where your last try left off.

its a pain, but at least all of your incomplete stuff is not a waste.