unity-2d-panel crashed with SIGSEGV in calloc()

[fabian]

not sure if it was related to turning on other monitor (in Monitors aplet) or just so.

ProblemType: Crash
DistroRelease: Ubuntu 11.10
Package: unity-2d-panel 4.6.1-0ubuntu1
ProcVersionSignature: Ubuntu 3.0.0-10.16-generic-pae 3.0.4
Uname: Linux 3.0.0-10-generic-pae i686
NonfreeKernelModules: fglrx
ApportVersion: 1.22.1-0ubuntu2
Architecture: i386
Date: Sun Sep 11 17:51:11 2011
ExecutablePath: /usr/bin/unity-2d-panel
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1)
ProcCmdline: unity-2d-panel
ProcEnviron:
 PATH=(custom, no user)
 LANG=pl_PL.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0xb6698f1d: cmp 0xc(%eax),%esi
 PC (0xb6698f1d) ok
 source "0xc(%eax)" (0x02ad000c) not located in a known VMA region (needed readable region)!
 destination "%esi" ok
 Stack memory exhausted (SP below stack segment)
SegvReason: reading unknown VMA
Signal: 11
SourcePackage: unity-2d
StacktraceTop:
 ?? () from /lib/i386-linux-gnu/libc.so.6
 ?? () from /lib/i386-linux-gnu/libc.so.6
 calloc () from /lib/i386-linux-gnu/libc.so.6
 ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
 g_malloc0 () from /lib/i386-linux-gnu/libglib-2.0.so.0
Title: unity-2d-panel crashed with SIGSEGV in calloc()
UpgradeStatus: Upgraded to oneiric on 2011-08-28 (13 days ago)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

[Apport retracing service (apport)]

StacktraceTop:
 malloc_consolidate (av=0xb67a3400) at malloc.c:5161
 malloc_consolidate (av=0xb67a3400) at malloc.c:5089
 _int_malloc (av=0xb67a3400, bytes=2040) at malloc.c:4373
 __libc_calloc (n=1, elem_size=2040) at malloc.c:4065
 standard_calloc (n_blocks=1, n_bytes=2040) at /build/buildd/glib2.0-2.29.90/./glib/gmem.c:107