Comment 26 for bug 25931

deuce, if 'dbus start' fails that way, then it is already running. The easiest workaround is to just wait for some seconds at the login screen before logging in. The correct way is to rename /etc/rc2.d/S20dbus to /etc/rc2.d/S12dbus (this was recently done in Feisty).

If it does not even log in, please get .xsession-errors from your home directory and attach it here (you can log in on a text console after pressing Ctrl+Alt+F1).