Same with me: I'm also using Ubuntu Gutsy (7.10) with PS 020. The game loads perfectly well, but when I do something, be it walking around or changing some settings, the game crashes and I have to restart the computer (usually through Als+PrintScreen+B). The command line output is almost identical, only some details that I think are non-essential (like "Object XY is not closed" or "Multitexture units") are different, but the last two lines are identical.