I don't believe it; I just solved my performance and other problems, and it works perfectly now. All I did was kill one of the downloads in the download window, one that had been there for months and always seemed to say "Connecting...". Suddenly, LimeWire is quick and responsive, more so than ever before! I also saw some improvements in downloading, now that they work, and how there's a progress bar for verification now.

Only thing, it did quit on its own without me pressing anything, but only after a couple of hours use just when I was thinking of quitting.