I have same problem and still no solution. The upgrade from Breezy to Dapper seemed to be the reason to the freezes, often during a session but mostly in the login screen. At he same time the sound was missing in some sessions and worked in others. Annoying, but not as critical.
Then came the edgy beta which I installed on another disc. And at last! It seemed to be stable. Because of the beta status I used my "old" and over long time tuned Dapper only playing and tuning/configuring Edgy. But then came the 6.10 upgrade! Again no sound as described above, and I have had one freeze by now! -- VIA 8235 embedded card not working: freezing desktop in Dapper https://launchpad.net/bugs/59078 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
