I was getting this in Jaunty with SuperTuxKart and Nexuiz when using Compiz. Metacity did not have the same problem. Disabling the screensaver, as mentioned in the previous comment, seems to have fixed the problem when using Compiz.
** Changed in: compiz (Ubuntu) Status: Incomplete => Confirmed -- [gutsy] sdl games leave fullscreen mode without obvious reason https://bugs.launchpad.net/bugs/155263 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs