So far 2.8.6 (or whatever it is) seems to work fine for me. I use an iMac 700 MHZ 60 GB Mac (pre-flat panel) and haven't had any problems. Sometimes I use different "search" techniques with limewire sometimes the same until whatever file I look for shows up.

So far the only problem I am sometimes faced with is what I call "constant Requery Sent" messages when I download (regardless of what speed the file is - Modem, Cable/DSL. T1 or T3 ...). But mostly I have no trouble.