xfce4-clipman-plugin crashed with SIGSEGV in g_cclosure_marshal_VOID__BOXED() out of the nowere

[KojiroAK]

Binary package hint: xfce4-clipman-plugin

I just surft on forum.ubuntuusers.de with Firefox and suddenly there was the crash report.
Didn't mark or copy anything.

ProblemType: Crash
Architecture: i386
Date: Thu Mar 18 16:51:36 2010
DistroRelease: Ubuntu 10.04
ExecutablePath: /usr/lib/xfce4-clipman-plugin/xfce4/panel-plugins/xfce4-clipman-plugin
InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Beta i386 (20100316)
Package: xfce4-clipman-plugin 2:1.1.3-1
ProcCmdline: /usr/lib/xfce4-clipman-plugin/xfce4/panel-plugins/xfce4-clipman-plugin socket_id 25165862 name xfce4-clipman-plugin id 12689237584 display_name Zwischenablage size 24 screen_position 2
ProcEnviron:
 LANG=de_CH.utf8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.32-16.25-generic
SegvAnalysis:
 Segfault happened at: 0x8050576: mov 0x4(%esi),%ecx
 PC (0x08050576) ok
 source "0x4(%esi)" (0x00000004) not located in a known VMA region (needed readable region)!
 destination "%ecx" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: xfce4-clipman-plugin
StacktraceTop:
 ?? ()
 g_cclosure_marshal_VOID__BOXED ()
 g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
 ?? () from /usr/lib/libgobject-2.0.so.0
 g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0
Title: xfce4-clipman-plugin crashed with SIGSEGV in g_cclosure_marshal_VOID__BOXED()
Uname: Linux 2.6.32-16-generic i686
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

[Apport retracing service (apport)]

StacktraceTop:
 default_clipboard_owner_change (manager=0x820c000, event=0x81c75f0)
 g_signal_stop_emission () from /usr/lib/libgobject-2.0.so.0
 g_object_force_floating () from /usr/lib/libgobject-2.0.so.0
 g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0
 ?? () from /usr/lib/libgobject-2.0.so.0