Application: kcmshell4 ()
KDE Platform Version: 4.9.97
Qt Version: 4.8.3
Operating System: Linux 3.7.0-7-generic i686
Distribution: Ubuntu Raring Ringtail (development branch)

-- Information about the crash:
try to add new user under system GUI

The crash can be reproduced every time.

-- Backtrace:
Application: KDE-Kontrollmodul (kcmshell4), signal: Aborted
Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1".
[KCrash Handler]
#7  0xb7742424 in __kernel_vsyscall ()
#8  0xb75a192f in raise () from /lib/i386-linux-gnu/libc.so.6
#9  0xb75a4ec3 in abort () from /lib/i386-linux-gnu/libc.so.6
#10 0xb19a52b8 in Py_FatalError (msg=msg@entry=0xb1a9e8fc "take_gil: NULL tstate") at ../Python/pythonrun.c:2365
#11 0xb19aa286 in take_gil.35518 (tstate=0x0) at ../Python/ceval_gil.h:211
#12 0xb19aa85f in PyEval_InitThreads () at ../Python/ceval.c:309
#13 0xb2822a39 in KPythonPluginFactory::initialize (this=this@entry=0x8e25a80) at ../../kpythonpluginfactory/kpythonpluginfactory.cpp:109
#14 0xb2823734 in KPythonPluginFactory::create (this=0x8e25a80, iface=0xb7486280 <qt_meta_stringdata_KCModule> "KCModule", parentWidget=0x0, parent=0x8e21210, args=..., keyword=...) at ../../kpythonpluginfactory/kpythonpluginfactory.cpp:127
#15 0xb754aa72 in create<KCModule> (args=..., keyword=..., parent=0x8e21210, parentWidget=0x0, this=<optimized out>) at ../../kdecore/util/kpluginfactory.h:531
#16 createInstance<KCModule> (error=0xbf9df7bc, args=..., parent=0x8e21210, parentWidget=0x0, this=0x8e01608) at ../../kdecore/services/kservice.h:559
#17 createInstance<KCModule> (error=0xbf9df7bc, args=..., parent=0x8e21210, this=0x8e01608) at ../../kdecore/services/kservice.h:536
#18 KCModuleLoader::loadModule (mod=..., report=KCModuleLoader::Inline, parent=0x8e21210, args=...) at ../../kutils/kcmoduleloader.cpp:89
#19 0xb755035a in KCModuleProxyPrivate::loadModule (this=this@entry=0x8e27428) at ../../kutils/kcmoduleproxy.cpp:106
#20 0xb7550b04 in KCModuleProxy::realModule (this=this@entry=0x8e21210) at ../../kutils/kcmoduleproxy.cpp:83
#21 0xb7550e82 in KCModuleProxy::useRootOnlyMessage (this=0x8e21210) at ../../kutils/kcmoduleproxy.cpp:315
#22 0xb754cc4d in KCMultiDialog::addModule (this=0x8dffb88, moduleInfo=..., parentItem=0x0, args=...) at ../../kutils/kcmultidialog.cpp:390
#23 0xb773abd6 in kdemain (_argc=2, _argv=0xbf9dfce4) at ../../kcmshell/main.cpp:289
#24 0x0804855b in main (argc=2, argv=0xbf9dfce4) at kcmshell4_dummy.cpp:3

Reported using DrKonqi