The Game works fine for me in game, but when I exit it fails to reset the sesolution for my vid card and crashes and I can't change it back. The best workaround is to start quake3 and exit so that quake3 resets the display corectly.
this is the xterm output for the crash
X Error of failed request: BadMatch (invalid parameter attributes)
Major opcode of failed request: 141 (GLX)
Minor opcode of failed request: 5 (X_GLXMakeCurrent)
Serial number of failed request: 25
Current serial number in output stream: 25
Signal: SIGSEGV [segmentation fault]
This is not a huge bug just a annoying one.
I have same problem, it seems if you let it go for a little bit (not sure how long) it will finally let yoy change mode back with ctr+alt+-/+ At least is does for me, and yes it is very annoying.