lightdm-qt-greeter crashed with SIGSEGV in QFile::fileName()

Qt Greeter crashes on startup. I get it every time, so I can provide any additional information if needed.

ProblemType: Crash
DistroRelease: Ubuntu 11.10
Package: lightdm-qt-greeter 0.9.5-0ubuntu1
ProcVersionSignature: Ubuntu 3.0.0-11.18-generic 3.0.4
Uname: Linux 3.0.0-11-generic i686
ApportVersion: 1.23-0ubuntu1
Architecture: i386
Date: Wed Sep 14 19:22:22 2011
ExecutablePath: /usr/sbin/lightdm-qt-greeter
InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Beta i386 (20100318)
ProcCmdline: lightdm-qt-greeter
ProcEnviron:
 PATH=(custom, no user)
 LANG=ru_RU.UTF-8
 SHELL=/bin/false
SegvAnalysis:
 Segfault happened at: 0x452fbc <_ZNK5QFile8fileNameEv+12>: mov (%eax),%edx
 PC (0x00452fbc) ok
 source "(%eax)" (0x00000000) not located in a known VMA region (needed readable region)!
 destination "%edx" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: lightdm
StacktraceTop:
 QFile::fileName() const () from /usr/lib/i386-linux-gnu/libQtCore.so.4
 QLightDM::UsersModel::getUsers() () from /usr/lib/liblightdm-qt-1.so.0
 QLightDM::UsersModel::loadUsers() () from /usr/lib/liblightdm-qt-1.so.0
 QLightDM::UsersModel::UsersModel(QObject*) () from /usr/lib/liblightdm-qt-1.so.0
 QLightDM::users() () from /usr/lib/liblightdm-qt-1.so.0
Title: lightdm-qt-greeter crashed with SIGSEGV in QFile::fileName()
UpgradeStatus: Upgraded to oneiric on 2011-09-02 (12 days ago)
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