Core was generated by `/usr/local/bin/mythshutdown --status 0'.
Program terminated with signal 11, Segmentation fault.

(gdb) bt
#0  0xb663ca6b in QChar::decomposition () from /usr/lib/libqt-mt.so.3
#1  0xb663cc89 in QString::arg () from /usr/lib/libqt-mt.so.3
#2  0xb6f70d7c in UPnpNotifyTask::SendNotifyMsg (this=0x8127d00, pSocket=0x81316a0, sNT=@0xb4a5433c, sUDN=@0xb4a54338) at upnptasknotify.cpp:108
#3  0xb6f71275 in UPnpNotifyTask::ProcessDevice (this=0x8127d00, pSocket=0x81316a0, pDevice=0xb6fbe464) at upnptasknotify.cpp:189
#4  0xb6f71534 in UPnpNotifyTask::Execute (this=0x8127d00, pQueue=0x8127b90) at upnptasknotify.cpp:153
#5  0xb6f670b3 in TaskQueue::run (this=0x8127b90) at taskqueue.cpp:103
#6  0xb62ab082 in QThreadInstance::start () from /usr/lib/libqt-mt.so.3
#7  0xb5e07341 in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#8  0xb5c9a4ee in clone () from /lib/tls/i686/cmov/libc.so.6
(gdb)