I just tried to play Quake3 (QuakeLive) on a new laptop with an i3 core integrated gpu, running Ubuntu 10.10. Strangely, the performance was terrible. I'm running on intel driver, which seems to load correctly. I know it's not a high-end system, but I got used to Q3 being fairly playable on 3yo built-in i850GM with single core cpu, which was obviously much worse.
After switching to i3, I get barely 5fps, even if I use very low resolutions (640x480 and similar).
What could affect the performance that much? What should I look for? There doesn't seem to be anything obvious in the Xorg logs, or my xsessionerrors.