Application: KMix (kmix), signal SIGABRT
[Thread debugging using libthread_db enabled]
[New Thread 0xb8003700 (LWP 5294)]
[KCrash handler]
#6  0xb802d424 in __kernel_vsyscall ()
#7  0x41049640 in raise () from /lib/i686/cmov/libc.so.6
#8  0x4104b018 in abort () from /lib/i686/cmov/libc.so.6
#9  0x44b0dcfd in qt_message_output (msgType=<value optimized out>, 
    buf=<value optimized out>) at global/qglobal.cpp:2061
#10 0x44b0ddc6 in qFatal (msg=<value optimized out>)
    at global/qglobal.cpp:2263
#11 0x44b0de55 in qt_assert (assertion=) at global/qglobal.cpp:1831
#12 0x45dfe34a in Solid::DeviceManagerPrivate::_k_deviceAdded (
    this=<value optimized out>, udi=<value optimized out>)
    at /tmp/buildd/kde4libs-4.1.1/solid/solid/devicemanager.cpp:164
#13 0x45dfe64f in Solid::DeviceManagerPrivate::qt_metacall (
    this=<value optimized out>, _c=<value optimized out>, 
    _id=<value optimized out>, _a=<value optimized out>)
    at /tmp/buildd/kde4libs-4.1.1/obj-i486-linux-gnu/solid/solid/devicemanager_p.moc:72
#14 0x44c19ed0 in QMetaObject::activate (sender=<value optimized out>, 
    from_signal_index=<value optimized out>, 
    to_signal_index=<value optimized out>, argv=<value optimized out>)
    at kernel/qobject.cpp:3016
#15 0x44c1ac52 in QMetaObject::activate (sender=<value optimized out>, 
    m=<value optimized out>, local_signal_index=<value optimized out>, argv=)
    at kernel/qobject.cpp:3086
#16 0x45e10643 in Solid::Ifaces::DeviceManager::deviceAdded (this=)
    at /tmp/buildd/kde4libs-4.1.1/obj-i486-linux-gnu/solid/solid/ifaces/devicemanager.moc:79
#17 0x45e362ae in Solid::Backends::Hal::HalManager::slotDeviceAdded (this=)
    at /tmp/buildd/kde4libs-4.1.1/solid/solid/backends/hal/halmanager.cpp:214
#18 0x45e3634a in Solid::Backends::Hal::HalManager::qt_metacall (
    this=<value optimized out>, _c=<value optimized out>, 
    _id=<value optimized out>, _a=<value optimized out>)
    at /tmp/buildd/kde4libs-4.1.1/obj-i486-linux-gnu/solid/solid/backends/hal/halmanager.moc:70
#19 0x44d5546b in QDBusConnectionPrivate::deliverCall (
    this=<value optimized out>, object=<value optimized out>, 
    msg=<value optimized out>, metaTypes=<value optimized out>, 
    slotIdx=<value optimized out>) at qdbusintegrator.cpp:865
#20 0x44d5cae7 in QDBusCallDeliveryEvent::placeMetaCall (this=)
    at qdbusintegrator_p.h:136
#21 0x44c14be1 in QObject::event (this=<value optimized out>, 
    e=<value optimized out>) at kernel/qobject.cpp:1140
#22 0x45216b8c in QApplicationPrivate::notify_helper (
    this=<value optimized out>, receiver=<value optimized out>, 
    e=<value optimized out>) at kernel/qapplication.cpp:3800
#23 0x4521e9fe in QApplication::notify (this=<value optimized out>, 
    receiver=<value optimized out>, e=<value optimized out>)
    at kernel/qapplication.cpp:3392
#24 0x45bb497d in KApplication::notify (this=<value optimized out>, 
    receiver=<value optimized out>, event=<value optimized out>)
    at /tmp/buildd/kde4libs-4.1.1/kdeui/kernel/kapplication.cpp:311
#25 0x44c053af in QCoreApplication::notifyInternal (
    this=<value optimized out>, receiver=<value optimized out>, 
    event=<value optimized out>) at kernel/qcoreapplication.cpp:591
#26 0x44c06035 in QCoreApplicationPrivate::sendPostedEvents (
    receiver=<value optimized out>, event_type=<value optimized out>, 
    data=<value optimized out>)
    at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#27 0x44c0622d in QCoreApplication::sendPostedEvents (receiver=)
    at kernel/qcoreapplication.cpp:1095
#28 0x452b0b2f in QEventDispatcherX11::processEvents (
    this=<value optimized out>, flags=<value optimized out>)
    at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:220
#29 0x44c03a7a in QEventLoop::processEvents (this=<value optimized out>, 
    flags=<value optimized out>) at kernel/qeventloop.cpp:149
#30 0x44c03c3a in QEventLoop::exec (this=<value optimized out>, 
    flags=<value optimized out>) at kernel/qeventloop.cpp:200
#31 0x44c062f5 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:849
#32 0x45216a07 in QApplication::exec () at kernel/qapplication.cpp:3330
#33 0x45e6a88b in kdemain (argc=<value optimized out>, 
    argv=<value optimized out>)
    at /tmp/buildd/kdemultimedia-4.1.1/kmix/main.cpp:69
#34 0x08048582 in main (argc=)
    at /tmp/buildd/kdemultimedia-4.1.1/obj-i486-linux-gnu/kmix/kmix_dummy.cpp:3
#0  0xb802d424 in __kernel_vsyscall ()

Looks like the machine was not really idle. Something was hot-pluuged.
Interesting enough, apart from main() there is no KMix code involved in the stacktrace. It crashes inside Solid as far as I see.

Thus I'll assign this to Solid (which should be module kdelibs).

If I am not completely mistaken this should be the same problem as already described in bug #160221

*** This bug has been marked as a duplicate of bug 160221 ***