Since I recompiled my glibc under Gentoo with NPTL enabled, I also got problems with the game.
I can enter my login/pass and connect to the server, but as soon as the game begins (i.e. 3D world is displayed), it freezes. When I\'m lucky, after 30 seconds of waiting I can start playing, with short random freezes though. When I\'m not, I can just hit CTRL+C in the xterm.
I noticed that during the freezes, the processor usage falls down to 0%. However, the music goes on, and after a few moments, the console starts to print a lot of:
*** Input Buffer Full! Dropping packet of type 13!
So at least one thread still functions properly (IMHO).
If you (devs) want me to try debugging it, you know where I lurk
