Does anyone else have this problem?

If I place any window over top of an open Limewire window, everything slows to a crawl, and my CPU Monitor is pegged. I even get the little spinning beachball, just to close a Finder window. I am using 10.2.2

This means I have to minimize the Limewire window, everytime I open a Finder window, change songs in iTunes, really anything that requires putting Limewire in the background.