Version:           4.0.1 (KDE 4.0.1) (using 4.0.1 (KDE 4.0.1), Debian packages)
Compiler:          cc
OS:                Linux (i686) release 2.6.24-lg

konqueror segfaults reproducibly when given the URL "smb:/". Tested with Debian experimental packages (KDE 4.0.1) on i386.

Using host libthread_db library "/lib/i686/cmov/libthread_db.so.1".
[Thread debugging using libthread_db enabled]
[New Thread 0xb63496c0 (LWP 18695)]
[KCrash handler]
#6  0xb7f24410 in __kernel_vsyscall ()
#7  0xb7d14f15 in raise () from /lib/i686/cmov/libc.so.6
#8  0xb7d16891 in abort () from /lib/i686/cmov/libc.so.6
#9  0xb7b60a35 in qt_message_output (msgType=QtFatalMsg, 
    buf=0xbfb7473c "ASSERT: \"result.second\" in file /build/buildd/kde4libs-4.0.1/kio/kio/kdirmodel.cpp, line 304") at global/qglobal.cpp:2160
#10 0xb7b60ae9 in qFatal (msg=0xb7c4db64 "ASSERT: \"%s\" in file %s, line %d")
    at global/qglobal.cpp:2392
#11 0xb7b60c75 in qt_assert (assertion=0xb75bad39 "result.second", 
    file=0xb75bab10 "/build/buildd/kde4libs-4.0.1/kio/kio/kdirmodel.cpp", 
    line=304) at global/qglobal.cpp:1917
#12 0xb74735a6 in KDirModelPrivate::_k_slotNewItems (this=0x85da320, 
    items=@0x8366498)
    at /build/buildd/kde4libs-4.0.1/kio/kio/kdirmodel.cpp:304
#13 0xb747520a in KDirModel::qt_metacall (this=0x85ec9e8, 
    _c=QMetaObject::InvokeMetaMethod, _id=1, _a=0xbfb76d9c)
    at /build/buildd/kde4libs-4.0.1/obj-i486-linux-gnu/kio/kdirmodel.moc:75
#14 0xb7c2ee0a in QMetaObject::activate (sender=0x85e3ae0, 
    from_signal_index=13, to_signal_index=13, argv=0xbfb76d9c)
    at kernel/qobject.cpp:3087
#15 0xb7c2f9c2 in QMetaObject::activate (sender=0x85e3ae0, m=0xb75d673c, 
    local_signal_index=9, argv=0xbfb76d9c) at kernel/qobject.cpp:3149
#16 0xb7459993 in KDirLister::newItems (this=0x85e3ae0, _t1=@0x8366498)
    at /build/buildd/kde4libs-4.0.1/obj-i486-linux-gnu/kio/kdirlister.moc:252
#17 0xb745a9ea in KDirLister::Private::emitItems (this=0x85ed550)
    at /build/buildd/kde4libs-4.0.1/kio/kio/kdirlister.cpp:2184
#18 0xb746788c in KDirListerCache::slotEntries (this=0x85ea380, 
    job=0x83e1118, entries=@0xbfb77b98)
    at /build/buildd/kde4libs-4.0.1/kio/kio/kdirlister.cpp:961
#19 0xb746cb68 in KDirListerCache::qt_metacall (this=0x85ea380, 
    _c=QMetaObject::InvokeMetaMethod, _id=7, _a=0xbfb773d8)
    at /build/buildd/kde4libs-4.0.1/obj-i486-linux-gnu/kio/kdirlister_p.moc:96
#20 0xb7c2ee0a in QMetaObject::activate (sender=0x83e1118, 
    from_signal_index=40, to_signal_index=40, argv=0xbfb773d8)
    at kernel/qobject.cpp:3087
#21 0xb7c2f9c2 in QMetaObject::activate (sender=0x83e1118, m=0xb75d5aa0, 
    local_signal_index=0, argv=0xbfb773d8) at kernel/qobject.cpp:3149
#22 0xb742e499 in KIO::ListJob::entries (this=0x83e1118, _t1=0x83e1118, 
    _t2=@0xbfb77b98)
    at /build/buildd/kde4libs-4.0.1/obj-i486-linux-gnu/kio/jobclasses.moc:762
#23 0xb74384ac in KIO::ListJobPrivate::slotListEntries (this=0x84109e0, 
    list=@0xbfb77b98) at /build/buildd/kde4libs-4.0.1/kio/kio/job.cpp:2283
#24 0xb7442a52 in KIO::ListJob::qt_metacall (this=0x83e1118, 
    _c=QMetaObject::InvokeMetaMethod, _id=6, _a=0xbfb779dc)
    at /build/buildd/kde4libs-4.0.1/obj-i486-linux-gnu/kio/jobclasses.moc:749
#25 0xb7c2ee0a in QMetaObject::activate (sender=0x8467f70, 
    from_signal_index=10, to_signal_index=10, argv=0xbfb779dc)
    at kernel/qobject.cpp:3087
#26 0xb7c2f9c2 in QMetaObject::activate (sender=0x8467f70, m=0xb75d83a4, 
    local_signal_index=6, argv=0xbfb779dc) at kernel/qobject.cpp:3149
#27 0xb74ff233 in KIO::SlaveInterface::listEntries (this=0x8467f70, 
    _t1=@0xbfb77b98)
    at /build/buildd/kde4libs-4.0.1/obj-i486-linux-gnu/kio/slaveinterface.moc:174
#28 0xb7503249 in KIO::SlaveInterface::dispatch (this=0x8467f70, _cmd=106, 
    rawdata=@0xbfb77be4)
    at /build/buildd/kde4libs-4.0.1/kio/kio/slaveinterface.cpp:196
#29 0xb74ffa09 in KIO::SlaveInterface::dispatch (this=0x8467f70)
    at /build/buildd/kde4libs-4.0.1/kio/kio/slaveinterface.cpp:90
#30 0xb74ef78f in KIO::Slave::gotInput (this=0x8467f70)
    at /build/buildd/kde4libs-4.0.1/kio/kio/slave.cpp:319
#31 0xb74f04fd in KIO::Slave::qt_metacall (this=0x8467f70, 
    _c=QMetaObject::InvokeMetaMethod, _id=2, _a=0xbfb78118)
    at /build/buildd/kde4libs-4.0.1/obj-i486-linux-gnu/kio/slave.moc:74
#32 0xb7c2ee0a in QMetaObject::activate (sender=0x8248138, 
    from_signal_index=4, to_signal_index=4, argv=0x0)
    at kernel/qobject.cpp:3087
#33 0xb7c2f9c2 in QMetaObject::activate (sender=0x8248138, m=0xb75d52a0, 
    local_signal_index=0, argv=0x0) at kernel/qobject.cpp:3149
#34 0xb73ff087 in KIO::Connection::readyRead (this=0x8248138)
    at /build/buildd/kde4libs-4.0.1/obj-i486-linux-gnu/kio/connection.moc:83
#35 0xb7400d40 in KIO::ConnectionPrivate::dequeue (this=0x80c7b90)
    at /build/buildd/kde4libs-4.0.1/kio/kio/connection.cpp:82
#36 0xb7400dfe in KIO::Connection::qt_metacall (this=0x8248138, 
    _c=QMetaObject::InvokeMetaMethod, _id=1, _a=0x8365bd8)
    at /build/buildd/kde4libs-4.0.1/obj-i486-linux-gnu/kio/connection.moc:71
#37 0xb7c28a2b in QMetaCallEvent::placeMetaCall (this=0x8100348, 
    object=0x8248138) at kernel/qobject.cpp:536
#38 0xb7c2daf3 in QObject::event (this=0x8248138, e=0x4907)
    at kernel/qobject.cpp:1128
#39 0xb6b7d21d in QApplicationPrivate::notify_helper (this=0x8058178, 
    receiver=0x8248138, e=0x8100348) at kernel/qapplication.cpp:3556
#40 0xb6b80c77 in QApplication::notify (this=0xbfb78a2c, receiver=0x8248138, 
    e=0x8100348) at kernel/qapplication.cpp:3115
#41 0xb778e6cd in KApplication::notify (this=0xbfb78a2c, receiver=0x8248138, 
    event=0x8100348)
    at /build/buildd/kde4libs-4.0.1/kdeui/kernel/kapplication.cpp:314
#42 0xb7c1bffb in QCoreApplication::notifyInternal (this=0xbfb78a2c, 
    receiver=0x8248138, event=0x8100348) at kernel/qcoreapplication.cpp:530
#43 0xb7c1d7be in QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, 
    event_type=0, data=0x804bf50)
    at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:200
#44 0xb7c1daad in QCoreApplication::sendPostedEvents (receiver=0x0, 
    event_type=-1) at kernel/qcoreapplication.cpp:1001
#45 0xb7c3fcdb in postEventSourceDispatch (s=0x805b460)
    at kernel/qeventdispatcher_glib.cpp:207
#46 0xb688c2b6 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#47 0xb688f643 in ?? () from /usr/lib/libglib-2.0.so.0
#48 0x0805a898 in ?? ()
#49 0x00000000 in ?? ()
#0  0xb7f24410 in __kernel_vsyscall ()