As it turns out the buggy package is for sure the gnome-settings-daemon. I wasn't able to make the broken install work properly by downloading a deb with a different version, but I was able to break an install and the BETA LiveCD simply by updating this package.
Further, another clean install of the beta and then version locking the gnome-settings-daemon kept it alive even after all other updates were applied. I'm guessing I should file a new bug report on this package. Thanks for all the help and advice. -- [RV350] Desktop corruption – Screen only shows vertical bands https://bugs.launchpad.net/bugs/643118 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs