In 0.24 X keeps crashing. I thought to start with that it was the playback profiles in mythtv (see the thread I posted at mythtv talk), but it's happening when the frontend is not working and I'm simply trying to open a browser or synaptic or some such.

Is this a known issue? What log files do I need to look at to find out what's happening?

Mythbuntu 10.10
Processor (CPU) - Intel® Atom™ DualCore Processor D525 (1.8GHz) 667MHz FSB/1MB Cache
Motherboard - ASUS® AT5IONT-I: NVIDIA® ION™, HDMI 1080P, USB 3.0

Any help much appreciated.