I think I know what is the problem. When logging in the gnome-setting-manager with gdm's pid is still active. This makes users gnome-settings-manager fail to start. After some time gdm's one finally exits and users is left with gray theme.
The following in: [mutex:/etc/gdm]% cat /etc/gdm/PostLogin/Default killall gnome-settings-daemon 1>>/tmp/log.1 2>>/tmp/log.2 killall -9 gnome-settings-daemon 1>>/tmp/log.1 2>>/tmp/log.2 has fixed my problem. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/588155 Title: randomly gnome-settings-daemon fails to start -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs