As soon as I start version 2.8.5 Pro, my usage goes through the roof. Almost nothing else works when I'm running the program. This just started with 2.8.5

BTW, I have a 1.3GHz Athlon and 768M of RAM. Everything else flies, and I have no problem running several other programs simultaneously... as long as none of them are LimeWire! What changed with this version?? Any ideas?