switching users causes laptop to suspend

[Alexander List]

Sometimes after resuming from sleep, when someone else was using my laptop, after clicking "switch user" and entering my password, the laptop goes to sleep again, without me clicking suspend or anything.

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: gnome-screensaver 3.6.0-0ubuntu2
ProcVersionSignature: Ubuntu 3.5.0-24.37-generic 3.5.7.4
Uname: Linux 3.5.0-24-generic x86_64
ApportVersion: 2.6.1-0ubuntu10
Architecture: amd64
Date: Mon Feb 11 16:01:57 2013
GnomeSessionIdleInhibited: No
GnomeSessionInhibitors: None
GsettingsGnomeSession:
 org.gnome.desktop.session idle-delay uint32 600
 org.gnome.desktop.session session-name 'ubuntu'
InstallationDate: Installed on 2012-11-17 (85 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
MarkForUpload: True
SourcePackage: gnome-screensaver
Symptom: security
Title: Screen locking issue
UpgradeStatus: No upgrade log present (probably fresh install)