Works fine for me in Virtualbox without any vbox modules (using ltsp trunk, not the version in 12.04, but I don't think there were any related changes since then except maybe for the dbus machine id).
Can you try with a new user, to verify that it's not related to broken gconf/dconf settings for this user?
Works fine for me in Virtualbox without any vbox modules (using ltsp trunk, not the version in 12.04, but I don't think there were any related changes since then except maybe for the dbus machine id).
Can you try with a new user, to verify that it's not related to broken gconf/dconf settings for this user?