RandomUsername

Same problem here and I do indeed have an Nvidia card with the proprietary drivers installed. I get this in the syslog if it helps: Oct 20 16:15:49 lucid-desktop kernel: [ 2839.480967] pyrogenesis[5052]: segfault at b77d2014 ip b773d4fe sp b2de9180 error 7 in libGL.so.260.19.06[b76c5000+9c000]