unity-panel-service crashed with SIGSEGV in g_list_prepend()

don't know.

ProblemType: Crash
DistroRelease: Ubuntu 11.10
Package: unity-services 4.0.1-0ubuntu3
ProcVersionSignature: Ubuntu 3.0-2.3-generic 3.0.0-rc4
Uname: Linux 3.0-2-generic x86_64
NonfreeKernelModules: fglrx
Architecture: amd64
Date: Sun Jul 3 20:41:31 2011
ExecutablePath: /usr/lib/unity/unity-panel-service
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Alpha amd64 (20110531.1)
ProcCmdline: /usr/lib/unity/unity-panel-service
ProcEnviron:
 SHELL=/bin/bash
 PATH=(custom, no user)
 LANG=en_US.UTF-8
SegvAnalysis:
 Segfault happened at: 0x7f095f86d430 <g_list_prepend>: mov %rbx,-0x10(%rsp)
 PC (0x7f095f86d430) ok
 source "%rbx" ok
 destination "-0x10(%rsp)" (0x7fffeececff8) not located in a known VMA region (needed writable region)!
 Stack memory exhausted (SP below stack segment)
SegvReason: writing unknown VMA
Signal: 11
SourcePackage: unity
StacktraceTop:
 g_list_prepend () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
 gtk_window_list_toplevels () from /usr/lib/libgtk-3.so.0
 ?? () from /usr/lib/libgtk-3.so.0
 ?? () from /usr/lib/libgtk-3.so.0
 g_closure_invoke () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
Title: unity-panel-service crashed with SIGSEGV in g_list_prepend()
UpgradeStatus: Upgraded to oneiric on 2011-06-27 (5 days ago)
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