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

[Rus F Adrian]

Unity crash suddenly...

ProblemType: Crash
DistroRelease: Ubuntu 11.10
Package: unity-services 4.0.1-0ubuntu3
ProcVersionSignature: Ubuntu 3.0-3.4-generic 3.0.0-rc5
Uname: Linux 3.0-3-generic i686
Architecture: i386
Date: Mon Jul 4 21:34:37 2011
ExecutablePath: /usr/lib/unity/unity-panel-service
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Alpha i386 (20110702)
ProcCmdline: /usr/lib/unity/unity-panel-service
ProcEnviron:
 SHELL=/bin/bash
 PATH=(custom, no user)
 LANG=en_US.UTF-8
SegvAnalysis:
 Segfault happened at: 0xdb6eea: call 0xdb60f7
 PC (0x00db6eea) ok
 source "0xdb60f7" (0x00db60f7) ok
 destination "(%esp)" (0xbf675000) 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:
 ?? () from /usr/lib/i386-linux-gnu/libgthread-2.0.so.0
 g_slice_alloc () from /lib/i386-linux-gnu/libglib-2.0.so.0
 g_list_prepend () from /lib/i386-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
Title: unity-panel-service crashed with SIGSEGV in g_slice_alloc()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

[Apport retracing service (apport)]

StacktraceTop:
 ?? () from /usr/lib/i386-linux-gnu/libgthread-2.0.so.0
 g_slice_alloc () from /lib/i386-linux-gnu/libglib-2.0.so.0
 g_list_prepend () from /lib/i386-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