I've been trying but I just about manage to get it installed. Then running it causes a crash.
2 GB Ram, Sempron 3200+
MC was the only thing stopping me from moving to Linux. I've now moved, and playing with getting MC to work under Virtualbox or Wine.
Otherwise I've been quite impressed with Quod Libet. Nowhere near the power of MC, but I only use it for audio, and it's a nice lightweight app. I will also play with Songbird.
One of the reasons for the move is that to my ears, Linux sounds better than XP.