python3.2mu crashed with SIGSEGV in g_type_check_instance_cast()

The crash occurred while moving Snippets in the Preferences of Onboard.

ProblemType: Crash
DistroRelease: Ubuntu 12.10
Package: python3.2-minimal 3.2.3-3
ProcVersionSignature: Ubuntu 3.5.0-9.9-generic 3.5.0
Uname: Linux 3.5.0-9-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.4-0ubuntu6
Architecture: amd64
CrashCounter: 1
Date: Sat Aug 11 23:03:49 2012
ExecutablePath: /usr/bin/python3.2mu
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release amd64 (20091027)
ProcCmdline:
 python3 -cfrom\ Onboard.settings\ import\ Settings
 s\ =\ Settings(False)
SegvAnalysis:
 Segfault happened at: 0x7effdd8ab81c <g_type_check_instance_cast+28>: mov (%rax),%rbp
 PC (0x7effdd8ab81c) ok
 source "(%rax)" (0x00000001) not located in a known VMA region (needed readable region)!
 destination "%rbp" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: python3.2
StacktraceTop:
 g_type_check_instance_cast (type_instance=type_instance@entry=0x23881c0, iface_type=23856896) at /build/buildd/glib2.0-2.33.8/./gobject/gtype.c:3997
 gtk_spin_button_accessible_value_changed (data=0x23881c0, adjustment=<optimized out>) at /build/buildd/gtk+3.0-3.5.10/./gtk/a11y/gtkspinbuttonaccessible.c:39
 gtk_spin_button_accessible_value_changed (adjustment=<optimized out>, data=0x23881c0) at /build/buildd/gtk+3.0-3.5.10/./gtk/a11y/gtkspinbuttonaccessible.c:31
 g_closure_invoke (closure=0x2367950, return_value=0x0, n_param_values=1, param_values=0x7fffa4df5770, invocation_hint=0x7fffa4df5710) at /build/buildd/glib2.0-2.33.8/./gobject/gclosure.c:777
 signal_emit_unlocked_R (node=node@entry=0x15e83e0, detail=detail@entry=0, instance=instance@entry=0x1784680, emission_return=emission_return@entry=0x0, instance_and_params=instance_and_params@entry=0x7fffa4df5770) at /build/buildd/glib2.0-2.33.8/./gobject/gsignal.c:3551
Title: python3.2mu crashed with SIGSEGV in g_type_check_instance_cast()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm admin cdrom dialout disk lpadmin plugdev sambashare