Ubuntu 11.04 faz logoff sozinho

[TiagoSoares]

Fui pesquisar os logs. Na última vez que aconteceu foi na hora de abrir o VirtualBox. Mas isso acontece em outros momentos também, geralmente na hora de abrir um arquivo qualquer ou outro aplicativo.

auth.log

Jun  2 08:31:06 tiago polkitd(authority=local): Unregistered Authentication Agent for unix-session:/org/freedesktop/ConsoleKit/Session2 (system bus name :1.33, object path /org/gnome/PolicyKit1/AuthenticationAgent, locale en_US.UTF-8) (disconnected from bus)
Jun  2 08:31:06 tiago gdm-session-worker[1079]: pam_unix(gdm:session): session closed for user tiago
Jun  2 08:31:06 tiago gnome-keyring-daemon[1364]: dbus failure unregistering from session: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.

kern.log

Jun  2 08:31:00 tiago kernel: [  102.623201] warning: `VirtualBox' uses 32-bit capabilities (legacy support in use)

syslog

Jun  2 08:31:06 tiago gdm-simple-slave[1689]: WARNING: Unable to load file '/etc/gdm/custom.conf': No such file or directory
Jun  2 08:31:06 tiago acpid: client 1003[0:0] has disconnected
Jun  2 08:31:06 tiago acpid: client connected from 1691[0:0]
Jun  2 08:31:06 tiago acpid: 1 client rule loaded
Jun  2 08:31:07 tiago gdm-session-worker[1736]: WARNING: Unable to load file '/etc/gdm/custom.conf': No such file or directory
Jun  2 08:31:07 tiago rtkit-daemon[1172]: Successfully made thread 1742 of process 1742 (n/a) owned by '106' high priority at nice level -11.
Jun  2 08:31:07 tiago rtkit-daemon[1172]: Supervising 4 threads of 2 processes of 2 users.
Jun  2 08:31:07 tiago rtkit-daemon[1172]: Successfully made thread 1745 of process 1742 (n/a) owned by '106' RT at priority 5.
Jun  2 08:31:07 tiago rtkit-daemon[1172]: Supervising 5 threads of 2 processes of 2 users.
Jun  2 08:31:07 tiago rtkit-daemon[1172]: Successfully made thread 1746 of process 1742 (n/a) owned by '106' RT at priority 5.
Jun  2 08:31:07 tiago rtkit-daemon[1172]: Supervising 6 threads of 2 processes of 2 users.
Jun  2 08:31:08 tiago gdm-simple-greeter[1735]: Gtk-WARNING: /build/buildd/gtk+2.0-2.24.4/gtk/gtkwidget.c:5687: widget not within a GtkWindow
Jun  2 08:31:08 tiago gdm-simple-greeter[1735]: WARNING: Unable to load CK history: no seat-id found

[Leonardo C]

Mesmo problema aqui e em 2 maquinas totalmente diferentes.

Dei uma pesquisada rapida e pelo jeito parece ser um bug conhecido e que já se arrasta desde o lançamento da versão.