gksu crashed with SIGSEGV in g_closure_invoke()

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Binary package hint: gksu

Just trying to get an update, after downloading it, update-manager crashed.

ProblemType: Crash
Architecture: amd64
CrashCounter: 1
DistroRelease: Ubuntu 8.10
ExecutablePath: /usr/bin/gksu
NonfreeKernelModules: nvidia
Package: gksu 2.0.0-5ubuntu3
ProcAttrCurrent: unconfined
ProcCmdline: /usr/bin/gksu --desktop /usr/share/applications/update-manager.desktop -- /usr/sbin/synaptic --hide-main-window --non-interactive --parent-window-id 67108867 -o Synaptic::closeZvt=true --progress-str Please\ wait,\ this\ can\ take\ some\ time. --finish-str Update\ is\ complete --set-selections-file /tmp/tmpzEW5rB
ProcEnviron:
 SHELL=/bin/bash
 PATH=/home/username/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
 LANG=en_US.UTF-8
Signal: 11
SourcePackage: gksu
StacktraceTop:
 ?? () from /usr/lib/libgksu2.so.0
 ?? () from /usr/lib/libgksu2.so.0
 g_closure_invoke ()
 ?? () from /usr/lib/libgobject-2.0.so.0
 g_signal_emit_valist ()
Title: gksu crashed with SIGSEGV in g_closure_invoke()
Uname: Linux 2.6.27-4-generic x86_64
UserGroups: adm admin audio cdrom dialout dip floppy lpadmin netdev plugdev powerdev scanner video