Version:            (using KDE 4.4.2)
Compiler:          gcc (GCC) 4.4.3 20100127 (Red Hat 4.4.3-4) 
OS:                Linux
Installed from:    Fedora RPMs

Application: ksmserver (1.4)
KDE Platform Version: 4.4.2 (KDE 4.4.2)
Qt Version: 4.6.2
Operating System: Linux 2.6.32.11-99.fc12.x86_64 x86_64
Distribution: "Fedora release 12 (Constantine)"

-- Information about the crash:
Just after I updated KDE from the (fedora) rawhide repository I got a ksmserver crash and kde cannot be loaded.
If I get in with, for example, openbox it's impossible to open other programs as systemsettings or ksysguard which backtrace is the same from #5 to #7 (both systemsettings and ksysguard).

The crash can be reproduced every time.

 -- Backtrace:
Application: El gestor de sesiones de KDE (ksmserver), signal: Segmentation fault
[KCrash Handler]
#5  0x0000000000000000 in ?? ()
#6  0x00000037b8413598 in QList<QString>::detach_helper_grow (this=<value optimized out>, i=2147483647, c=1) at /usr/include/QtCore/qlist.h:679
#7  0x00000037b8418838 in QList<QString>::append (this=<value optimized out>, t=...) at /usr/include/QtCore/qlist.h:507
#8  0x00000037b841521c in operator<< (this=0x172d8c0, kdewm=...) at /usr/include/QtCore/qstringlist.h:87
#9  KSMServer::selectWm (this=0x172d8c0, kdewm=...) at /usr/src/debug/kdebase-workspace-4.4.2/ksmserver/server.cpp:960
#10 0x00000037b8417489 in KSMServer::KSMServer (this=0x172d8c0, windowManager=..., _only_local=true) at /usr/src/debug/kdebase-workspace-4.4.2/ksmserver/server.cpp:622
#11 0x00000037b8412319 in kdemain (argc=23565168, argv=0x7fff9cfb4ff8) at /usr/src/debug/kdebase-workspace-4.4.2/ksmserver/main.cpp:285
#12 0x0000003bfac1eb1d in __libc_start_main () from /lib64/libc.so.6
#13 0x00000000004007d9 in _start ()