unity-greeter crashed with SIGSEGV in start_thread()

[Enver ALTIN]

When I have another monitor connected (or my laptop docked) the greeter crashes at startup and keeps crashing in a loop.
I break the loop by disconnecting the monitor, the greeter starts normally, I plug it back in and the monitor is normally recognized and I can finally login.

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: unity-greeter 0.2.5-0ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-18.29-generic-pae 3.2.9
Uname: Linux 3.2.0-18-generic-pae i686
ApportVersion: 1.94.1-0ubuntu2
Architecture: i386
CrashCounter: 1
Date: Fri Mar 16 15:34:29 2012
ExecutablePath: /usr/sbin/unity-greeter
InstallationMedia: Ubuntu 10.04.1 LTS "Lucid Lynx" - Release i386 (20100816.1)
ProcCmdline: /usr/sbin/unity-greeter
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/false
SegvAnalysis:
 Segfault happened at: 0x8050762: mov %eax,0x24(%edx)
 PC (0x08050762) ok
 source "%eax" ok
 destination "0x24(%edx)" (0xaaaaaace) 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-greeter
StacktraceTop:
 ?? ()
 ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
 start_thread () from /lib/i386-linux-gnu/libpthread.so.0
 clone () from /lib/i386-linux-gnu/libc.so.6
Title: unity-greeter crashed with SIGSEGV in start_thread()
UpgradeStatus: Upgraded to precise on 2012-02-13 (31 days ago)
UserGroups:

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make this software better. This particular crash has already been reported and is a duplicate of bug #942227, so is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.