Hitting send at login seems to restart X

[auxbuss]

Binary package hint: gdm

Boot machine.
gdm login screen appears.

Scenario one:
Type nothing
Hit send -> screen goes black, which looks like an X restart.
gdm login screen reappears.
Login as expected.

Scenario two:
Type user name
Hit send -> screen goes black, which looks like an X restart.
gdm login screen reappears.
Login as expected.

Scenario three:
Type user name
Click login button
Type password
Click proceed button
Gnome loads
Open console (via shortcut)
Type any letter and X restarts landing back at the gdm login screen.

I'm sure there are other scenarios.

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: gdm 2.30.5-0ubuntu2
ProcVersionSignature: Ubuntu 2.6.35-19.28-generic 2.6.35.3
Uname: Linux 2.6.35-19-generic i686
NonfreeKernelModules: nvidia
Architecture: i386
Date: Sat Sep 4 21:56:13 2010
EcryptfsInUse: Yes
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100427.1)
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_GB.utf8
 SHELL=/bin/bash
SourcePackage: gdm

[auxbuss (launchpad-auxbuss)]

Perhaps I should add that I have checked

  apps/gdm/simple-greeter/disable_user_list

[Sebastien Bacher (seb128)]

Thanks for the bug report. This particular bug has already been reported, but feel free to report any other bugs you find.

[mwm (mwm)]

this also happens to me on 10.10 but there is something i've noticed. on gdm, it doesn't show me and i don't have the ability to change sessions. it's disabled on the bottom panel.