Application that crashed: kbluetooth4
Version of the application: 0.3
KDE Version: 4.3.00 (KDE 4.3.0)
Qt Version: 4.5.2
Operating System: Linux 2.6.28-14-generic i686
Distribution: Ubuntu 9.04

What I was doing when the application crashed:
i run vpnc-disconnect which deactivates my wlan (and apparently crashes kde bluethooth) - i guess it's due to the fact that i have to enable it via a hardware key again...

 -- Backtrace:
Application: KBluetooth4 - The KDE4 Bluetooth Framework (kbluetooth4), signal: Segmentation fault
[KCrash Handler]
#6  0x00000000 in ?? ()
#7  0xb754ed23 in QDBusConnectionPrivate::activateCall (this=0x955eec0, object=0x95e6028, flags=273, msg=@0x95473c0) at qdbusintegrator.cpp:753
#8  0xb754f5e1 in QDBusConnectionPrivate::activateObject (this=0x955eec0, node=@0x95473ac, msg=@0x95473c0, pathStartPos=18) at qdbusintegrator.cpp:1370
#9  0xb754fada in QDBusActivateObjectEvent::placeMetaCall (this=0x9547380) at qdbusintegrator.cpp:1464
#10 0xb74473b0 in QObject::event (this=0xbfde0540, e=0x9547380) at kernel/qobject.cpp:1111
#11 0xb743656b in QCoreApplication::event (this=0xbfde0540, e=0x9547380) at kernel/qcoreapplication.cpp:1434
#12 0xb6a74679 in QApplication::event (this=0xbfde0540, e=0x9547380) at kernel/qapplication.cpp:2317
#13 0xb6a6ed3c in QApplicationPrivate::notify_helper (this=0x94f9e90, receiver=0xbfde0540, e=0x9547380) at kernel/qapplication.cpp:4056
#14 0xb6a7703e in QApplication::notify (this=0xbfde0540, receiver=0xbfde0540, e=0x9547380) at kernel/qapplication.cpp:3603
#15 0xb7c785cd in KApplication::notify (this=0xbfde0540, receiver=0xbfde0540, event=0x9547380) at /build/buildd/kde4libs-4.3.0/kdeui/kernel/kapplication.cpp:302
#16 0xb7436bcb in QCoreApplication::notifyInternal (this=0xbfde0540, receiver=0xbfde0540, event=0x9547380) at kernel/qcoreapplication.cpp:610
#17 0xb7437825 in QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x94dab38) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#18 0xb7437a1d in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at kernel/qcoreapplication.cpp:1140
#19 0xb74626af in postEventSourceDispatch (s=0x94fc110) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:218
#20 0xb63b4b88 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#21 0xb63b80eb in ?? () from /usr/lib/libglib-2.0.so.0
#22 0xb63b8268 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#23 0xb74622f8 in QEventDispatcherGlib::processEvents (this=0x94dad10, flags={i = -1075972984}) at kernel/qeventdispatcher_glib.cpp:327
#24 0xb6b10a75 in QGuiEventDispatcherGlib::processEvents (this=0x94dad10, flags={i = -1075972936}) at kernel/qguieventdispatcher_glib.cpp:202
#25 0xb74351fa in QEventLoop::processEvents (this=0xbfddf5b8, flags={i = -1075972872}) at kernel/qeventloop.cpp:149
#26 0xb7435642 in QEventLoop::exec (this=0xbfddf5b8, flags={i = -1075972652}) at kernel/qeventloop.cpp:201
#27 0xb7552fcc in QDBusConnectionPrivate::sendWithReply (this=0x95f6fd0, message=@0xbfddf728, sendMode=<value optimized out>, timeout=-1) at qdbusintegrator.cpp:1782
#28 0xb753c3c1 in QDBusConnection::call (this=0x94f9ca4, message=@0xbfddf728, mode=QDBus::BlockWithGui, timeout=-1) at qdbusconnection.cpp:516
#29 0xb755ac6b in QDBusAbstractInterface::callWithArgumentList (this=0x95ee158, mode=QDBus::BlockWithGui, method=@0xbfddf8d4, args=@0xbfddf808) at qdbusabstractinterface.cpp:402
#30 0xb755ebbd in QDBusAbstractInterface::call (this=0x95ee158, mode=QDBus::BlockWithGui, method=@0xbfddf8d4, arg1=@0xbfddf8bc, arg2=@0xbfddf8b0, arg3=@0xbfddf8a4, arg4=@0xbfddf898, 
    arg5=@0xbfddf88c, arg6=@0xbfddf880, arg7=@0xbfddf874, arg8=@0xbfddf868) at qdbusabstractinterface.cpp:655
#31 0x08066ce3 in _start ()

Reported using DrKonqi