gksu crashed with SIGSEGV in gdk_window_set_opacity()

[LAZA]

Binary package hint: gksu

crashed while updating Ubuntu
evince was open and an error occured 'mouse has a problem, evtl. whiretaped'

ProblemType: Crash
Architecture: amd64
DistroRelease: Ubuntu 9.04
ExecutablePath: /usr/bin/gksu
Package: gksu 2.0.2-1ubuntu2
ProcCmdline: /usr/bin/gksu --desktop /usr/share/applications/update-manager.desktop -- /usr/sbin/synaptic --hide-main-window --non-interactive --parent-window-id 25165861 --update-at-startup
ProcCwd: /home/laza
ProcEnviron:
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
Signal: 11
SourcePackage: gksu
StacktraceTop:
 gdk_window_set_opacity ()
 ?? () from /usr/lib/libgksu2.so.0
 g_main_context_dispatch ()
 ?? () from /usr/lib/libglib-2.0.so.0
 g_main_loop_run () from /usr/lib/libglib-2.0.so.0
Title: gksu crashed with SIGSEGV in gdk_window_set_opacity()
Uname: Linux 2.6.28-15-generic x86_64
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make Ubuntu better. This particular crash has already been reported and is a duplicate of bug #415721, so is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.