unity-window-decorator crashed with SIGSEGV in g_closure_invoke()

[LiohMoeller]

Binary package hint: compiz

window decoration suddenly crashed

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: compiz-gnome 1:0.9.4-0ubuntu4
ProcVersionSignature: Ubuntu 2.6.38-6.34-generic 2.6.38-rc7
Uname: Linux 2.6.38-6-generic x86_64
NonfreeKernelModules: nvidia
Architecture: amd64
Date: Fri Mar 11 16:07:42 2011
ExecutablePath: /usr/bin/unity-window-decorator
ProcCmdline: /usr/bin/unity-window-decorator
ProcEnviron:
 SHELL=/bin/bash
 LANG=en_US.UTF-8
 LANGUAGE=en_US:en
SegvAnalysis:
 Segfault happened at: 0x415bcf: movq $0x0,0x318(%rax)
 PC (0x00415bcf) ok
 source "$0x0" ok
 destination "0x318(%rax)" (0x00000318) not located in a known VMA region (needed writable region)!
SegvReason: writing NULL VMA
Signal: 11
SourcePackage: compiz
StacktraceTop:
 ?? ()
 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
 g_signal_emit () from /usr/lib/libgobject-2.0.so.0
Title: unity-window-decorator crashed with SIGSEGV in g_closure_invoke()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:

[Zoltan Arnold Nagy (zoltan)]

happens without nvidia, and with latest updates.