A software change on my computer (I'm not sure what caused it) has caused me to lose a lot of graphics ability on my Compaq Presario C306US running Ubuntu 8.04 Hardy Heron. Before, I could use the "Extra" setting in Visual Effects without suffering a performance hit but can now only use "None" to get good performance. Also, some games I play now require lower graphics settings or I get under 10FPS, where I used to get 30. I have confirmed this is a software problem by booting with a LiveCD, and everything worked the way it used to there. Also, possibly related, the 2.6.24-19-openvz kernel could use my graphics card without a problem, but 2.6.24-21-openvz will only start in low graphics mode. For now, I have to use 2.6.24-21-generic.