Can you guys check and report which dbus version you are running, and if it's installed at all. There is probably some package down the dependency chain that should depend on the correct version of dbus.
If you have dbus-1 (from "stable") installed, you might have this kind of problem because it is not compatible with the newer dbus (0.61-5 is in unstable). About the .xsession-errors problem, that's a bit weird. My error file always stops growing at 200KiB. Thanks, Øystein
