I stopped using Kazaa lite. If you have a good compiler (like MinGW) you can use the bloatware-free, but still beta, giFT (gnu internet File Transfer). It runs Gnutella (Gnucleus, Limewire, Morpheous, Bearshare, Shareaza), Fasttrack (Kazaa, Grokster), and OpenFT networks.
http://gift.sourceforge.net
Unless you use Linux, it can take some patience to use right though. But it's worth it. (It's very fast and minimalist, but it doesn't have the advanced searching features of K-Lite).
Oh, and that oldversion site looks nice