Xorg crashed with SIGSEGV in DamageUnregister()

[fsvo_3000]

Crashed in VirtualBox

ProblemType: Crash
Architecture: i386
DistroRelease: Ubuntu 9.04
ExecutablePath: /usr/bin/Xorg
MediaBuild: Ubuntu 9.04 "Jaunty Jackalope" - Release i386 (20090420.1)
Package: xserver-xorg-core 2:1.6.0-0ubuntu14
ProcAttrCurrent: unconfined
ProcCmdline: /usr/X11R6/bin/X :0 -br -audit 0 -auth /var/lib/gdm/:0.Xauth -nolisten tcp vt7
ProcEnviron:
 PATH=(custom, no user)
 LANG=es_ES.UTF-8
ProcVersion: Linux version 2.6.28-11-generic (buildd@palmer) (gcc version 4.3.3 (Ubuntu 4.3.3-5hostname4) ) #42-Ubuntu SMP Fri Apr 17 01:57:59 UTC 2009
Signal: 11
SourcePackage: xorg-server
StacktraceTop:
 DamageUnregister ()
 shadowRemove () from /usr/lib/xorg/modules//libshadow.so
 ?? () from /usr/lib/xorg/modules//libshadow.so
 ?? ()
 ?? ()
Title: Xorg crashed with SIGSEGV in DamageUnregister()
Uname: Linux 2.6.28-11-generic i686
UserGroups: