Here's a strange one.

If a file finishes downloading, recent versions of limewire freeze for a bit; if you cancel a download, likewise. If you clear inactive or cancel a lot of downloads it completely locks up solid.

But if you go to the library tab, incompletes, and resume something (even a file already downloading) from there, this problem goes away for the rest of the session until you restart limewire -- if a file finishes downloading or you cancel a file it doesn't freeze, and if you cancel a bunch or clear inactive, it freezes for a short time instead of locking up.

So here's a feature request -- whatever changes when you resume from incompletes, make it happen automatically at startup. It shouldn't be too difficult -- it can just pretend the user flipped to the library tab, clicked the first item already in the downloads tab, and then hit resume and switched back, without of course actually visibly jumping around in the gui. This should remove those annoying freezes and hangs.