Won't reboot from session menu

[Jeff Siegel]

Binary package hint: xfce4-session

I had a mostly problem free clean install of 64-bit Xubuntu 11.04, save for one thing. When I click the reboot button on the session menu, it only reboots about half of the time. The other half of the time, it logs me out, and I get the sign in screen, and I have to reboot from there.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: xfce4-session 4.8.1-1ubuntu2
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic x86_64
NonfreeKernelModules: nvidia
Architecture: amd64
Date: Tue May 3 07:08:55 2011
ExecutablePath: /usr/bin/xfce4-session
InstallationMedia: Xubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427)
ProcEnviron:
 LANGUAGE=en_US:en
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: xfce4-session
UpgradeStatus: No upgrade log present (probably fresh install)