I downloaded version 1.1.0 from tremulous.net today and installed it on my brand new install of Ubuntu Hardy Heron. I have an nVidia 8800GT 512MB video card and I have enabled the proprietary nVidia driver in Ubuntu. When I first started playing it it played fine for a while, but then all of a sudden it jumped out to the terminal (it had been started by the installer) and all I could see was a window on the game about 1/4 size of the screen and another quarter of the screen was the terminal showing what the game was doing in the background. I had to ctrl-alt-backspace. Then I tried to play it by using the new GUI link in the Applications>Games menu and it loaded and it started switching between full screen and a windowed screen. By windowed screen I mean that that screen was full screen but the border of normal windows was there. In this state I could not alt+tab and switch to a different application (well I could, but the mouse wasn't working) and I could not play the game. I have since reinstalled the video driver and am about to reinstall the program.