I'm currently playing zc211b16 for Linux. I get the game in full screen mode but on save and quit, my desktop is stuck at 640x480 resolution. There is no response to ctrl+alt++ or ctrl+alt+- to change screen resolution. The only thing to do is restart the X server (ctrl+alt+backspace).

I'd really rather not do that because I have BOINC running constantly, and restarting X brings that to a screeching halt and has to be restarted.

Has anyone else had this problem, and how do you get out of it?

I haven't reported it as a bug yet. I'd like to first find out if anyone know of a fix fhis (a config file perhaps?).