Application that crashed: konqueror
Version of the application: 4.2.98 (KDE 4.2.98 (KDE 4.3 RC3))
KDE Version: 4.2.98 (KDE 4.2.98 (KDE 4.3 RC3))
Qt Version: 4.5.0
Operating System: Linux 2.6.30-020630-generic x86_64
Distribution: Ubuntu 9.04

What I was doing when the application crashed:
When choosing an entry in the drop down 'back' button in konqueror, the browser crashed.

Konqueror had 4 tabs open at the time.

 -- Backtrace:
Application: Konqueror (kdeinit4), signal: Segmentation fault
[KCrash Handler]
#5  KIO::SimpleJob::url (this=0x0) at /build/buildd/kde4libs-4.2.98a/kio/kio/job.cpp:339
#6  0x00007f7aa8e52a27 in KParts::BrowserRun::slotBrowserMimetype (this=0x61f0d00, _job=<value optimized out>, type=@0x7fffe268dc30) at /build/buildd/kde4libs-4.2.98a/kparts/browserrun.cpp:201
#7  0x00007f7aa8e53eed in KParts::BrowserRun::qt_metacall (this=0x61f0d00, _c=QMetaObject::InvokeMetaMethod, _id=1, _a=0x7fffe268d8d0)
    at /build/buildd/kde4libs-4.2.98a/obj-x86_64-linux-gnu/kparts/browserrun.moc:74
#8  0x00007f7aa96441f2 in QMetaObject::activate (sender=0x39527d0, from_signal_index=<value optimized out>, to_signal_index=44, argv=0x7fffe268d8d0) at kernel/qobject.cpp:3069
#9  0x00007f7aa873faa7 in KIO::TransferJob::mimetype (this=0x0, _t1=0x39527d0, _t2=<value optimized out>) at /build/buildd/kde4libs-4.2.98a/obj-x86_64-linux-gnu/kio/jobclasses.moc:392
#10 0x00007f7aa87454e1 in KIO::TransferJob::qt_metacall (this=0x39527d0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffe268da00)
    at /build/buildd/kde4libs-4.2.98a/obj-x86_64-linux-gnu/kio/jobclasses.moc:346
#11 0x00007f7aa96441f2 in QMetaObject::activate (sender=0x6cf4d70, from_signal_index=<value optimized out>, to_signal_index=23, argv=0x7fffe268d8d0) at kernel/qobject.cpp:3069
#12 0x00007f7aa8802ee5 in KIO::SlaveInterface::mimeType (this=0x0, _t1=<value optimized out>) at /build/buildd/kde4libs-4.2.98a/obj-x86_64-linux-gnu/kio/slaveinterface.moc:267
#13 0x00007f7aa88064c0 in KIO::SlaveInterface::dispatch (this=0x6cf4d70, _cmd=21, rawdata=<value optimized out>) at /build/buildd/kde4libs-4.2.98a/kio/kio/slaveinterface.cpp:270
#14 0x00007f7aa8803552 in KIO::SlaveInterface::dispatch (this=0x6cf4d70) at /build/buildd/kde4libs-4.2.98a/kio/kio/slaveinterface.cpp:91
#15 0x00007f7aa87f60d3 in KIO::Slave::gotInput (this=0x6cf4d70) at /build/buildd/kde4libs-4.2.98a/kio/kio/slave.cpp:322
#16 0x00007f7aa87f8338 in KIO::Slave::qt_metacall (this=0x6cf4d70, _c=QMetaObject::InvokeMetaMethod, _id=0, _a=0x7fffe268ddf0) at /build/buildd/kde4libs-4.2.98a/obj-x86_64-linux-gnu/kio/slave.moc:76
#17 0x00007f7aa96441f2 in QMetaObject::activate (sender=0x69cfc10, from_signal_index=<value optimized out>, to_signal_index=4, argv=0x7fffe268d8d0) at kernel/qobject.cpp:3069
#18 0x00007f7aa8713761 in KIO::ConnectionPrivate::dequeue (this=0x5b8a350) at /build/buildd/kde4libs-4.2.98a/kio/kio/connection.cpp:82
#19 0x00007f7aa8713bba in KIO::Connection::qt_metacall (this=0x69cfc10, _c=QMetaObject::InvokeMetaMethod, _id=0, _a=0x3656230)
    at /build/buildd/kde4libs-4.2.98a/obj-x86_64-linux-gnu/kio/connection.moc:73
#20 0x00007f7aa963e848 in QObject::event (this=0x69cfc10, e=0x1aa9260) at kernel/qobject.cpp:1118
#21 0x00007f7aa6bb678d in QApplicationPrivate::notify_helper (this=0x6b5820, receiver=0x69cfc10, e=0x1aa9260) at kernel/qapplication.cpp:4084
#22 0x00007f7aa6bbe97a in QApplication::notify (this=0x7fffe268ea30, receiver=0x69cfc10, e=0x1aa9260) at kernel/qapplication.cpp:4049
#23 0x00007f7aa7cf971b in KApplication::notify (this=0x7fffe268ea30, receiver=0x69cfc10, event=0x1aa9260) at /build/buildd/kde4libs-4.2.98a/kdeui/kernel/kapplication.cpp:302
#24 0x00007f7aa962e75c in QCoreApplication::notifyInternal (this=0x7fffe268ea30, receiver=0x69cfc10, event=0x1aa9260) at kernel/qcoreapplication.cpp:602
#25 0x00007f7aa962f3ca in QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x61e320) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#26 0x00007f7aa96581e3 in postEventSourceDispatch (s=<value optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:218
#27 0x00007f7aa561420a in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#28 0x00007f7aa56178e0 in ?? () from /usr/lib/libglib-2.0.so.0
#29 0x00007f7aa5617a7c in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#30 0x00007f7aa9657e6f in QEventDispatcherGlib::processEvents (this=0x6b4f40, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:323
#31 0x00007f7aa6c4ebef in QGuiEventDispatcherGlib::processEvents (this=0x0, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#32 0x00007f7aa962d002 in QEventLoop::processEvents (this=<value optimized out>, flags={i = -496441488}) at kernel/qeventloop.cpp:149
#33 0x00007f7aa962d3cd in QEventLoop::exec (this=0x7fffe268e7b0, flags={i = -496441408}) at kernel/qeventloop.cpp:200
#34 0x00007f7aa962f694 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:880
#35 0x00007f7a9e266d02 in kdemain () from /usr/lib/libkdeinit4_konqueror.so
#36 0x0000000000407215 in launch (argc=2, _name=0x65a558 "/usr/bin/konqueror", args=<value optimized out>, cwd=0x0, envc=0, envs=0x65a57c "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x65a584 "lapjos;1249055982;65990;5225_TIME1433746") at /build/buildd/kde4libs-4.2.98a/kinit/kinit.cpp:676
#37 0x0000000000407a38 in handle_launcher_request (sock=7, who=<value optimized out>) at /build/buildd/kde4libs-4.2.98a/kinit/kinit.cpp:1168
#38 0x0000000000407fe5 in handle_requests (waitForPid=0) at /build/buildd/kde4libs-4.2.98a/kinit/kinit.cpp:1361
#39 0x0000000000408b26 in main (argc=2, argv=0x7fffe2690118, envp=0x7fffe2690130) at /build/buildd/kde4libs-4.2.98a/kinit/kinit.cpp:1788

Reported using DrKonqi