update-manager crashed with RuntimeError in <module>()

[Gordon]

Binary package hint: update-manager

Description: Ubuntu karmic (development branch)
Release: 9.10

update-manager: version 0.124.2

This message appeared as I logged in. I didn't start update-manager at all

ProblemType: Crash
Architecture: amd64
Date: Thu Jul 16 09:03:29 2009
DistroRelease: Ubuntu 9.10
ExecutablePath: /usr/bin/update-manager
InterpreterPath: /usr/bin/python2.6
Package: update-manager 1:0.124.2
PackageArchitecture: all
ProcCmdline: /usr/bin/python2.6 /usr/bin/update-manager -d
ProcEnviron:
 SHELL=/bin/bash
 LANG=en_US.UTF-8
ProcVersionSignature: Ubuntu 2.6.31-2.17-generic
PythonArgs: ['/usr/bin/update-manager', '-d']
SourcePackage: update-manager
Title: update-manager crashed with RuntimeError in <module>()
Traceback:
 Traceback (most recent call last):
   File "/usr/bin/update-manager", line 43, in <module>
     gtk.init_check()
 RuntimeError: could not open display
Uname: Linux 2.6.31-2-generic x86_64
UserGroups: