Version:           4.2.1 (KDE 4.2.1) "release 104" (using 4.2.1 (KDE 4.2.1) "release 104", KDE:KDE4:Factory:Desktop / openSUSE_11.1)
Compiler:          gcc
OS:                Linux (x86_64) release 2.6.27.19-3.2-default

I'm really not sure what I've done in each detail, but Konqueror crashed with the backtrace below. In each case I had open the login form at http://forum.kde.org/kde-brainstorm-f-83.html and then opened a new tab or something like that.

Backtrace:

Application: Konqueror (konqueror), signal SIGSEGV
0x00007fecb99adce1 in nanosleep () from /lib64/libc.so.6
[Current thread is 1 (Thread 0x7fecbee46750 (LWP 7125))]

Thread 2 (Thread 0x7feca95af950 (LWP 7170)):
#0  0x00007fecbc169fdd in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007fecbc3daf57 in QWaitCondition::wait (this=0xcbfa28, mutex=0xcbfa20, time=30000) at thread/qwaitcondition_unix.cpp:85
#2  0x00007fecbc3d0a89 in QThreadPoolThread::run (this=0xc0a450) at concurrent/qthreadpool.cpp:140
#3  0x00007fecbc3d9fc2 in QThreadPrivate::start (arg=0xc0a450) at thread/qthread_unix.cpp:189
#4  0x00007fecbc166070 in start_thread () from /lib64/libpthread.so.0
#5  0x00007fecb99df10d in clone () from /lib64/libc.so.6
#6  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fecbee46750 (LWP 7125)):
[KCrash Handler]
#5  0x00007fecbc4d9675 in QMetaObject::activate (sender=0x24c67b0, m=<value optimized out>, local_signal_index=4, argv=0x0) at kernel/qobject.cpp:3139
#6  0x00007fecbbb05a06 in QLineEdit::keyPressEvent (this=0x24c67b0, event=0x24dbc50) at widgets/qlineedit.cpp:1948
#7  0x00007fecbd39692b in KLineEdit::keyPressEvent (this=0x24c67b0, e=0x24dbc50) at /usr/src/debug/kdelibs-4.2.1/kdeui/widgets/klineedit.cpp:892
#8  0x00007fecafd666fd in khtml::RenderWidget::handleEvent (this=0x20d39b0, ev=@0x23e4410) at /usr/src/debug/kdelibs-4.2.1/khtml/rendering/render_replaced.cpp:1131
#9  0x00007fecafce20d3 in DOM::HTMLGenericFormElementImpl::defaultEventHandler (this=0x2030a70, evt=0x23e4410) at /usr/src/debug/kdelibs-4.2.1/khtml/html/html_formimpl.cpp:1050
#10 0x00007fecafcf1d02 in DOM::HTMLInputElementImpl::defaultEventHandler (this=0x2030a70, evt=0x23e4410) at /usr/src/debug/kdelibs-4.2.1/khtml/html/html_formimpl.cpp:1937
#11 0x00007fecafc7e64c in DOM::NodeImpl::dispatchGenericEvent (this=0x2030a70, evt=0x23e4410) at /usr/src/debug/kdelibs-4.2.1/khtml/xml/dom_nodeimpl.cpp:524
#12 0x00007fecafc7e81e in DOM::NodeImpl::dispatchEvent (this=0x2030a70, evt=0x23e4410, exceptioncode=@0x7fffc6e88894, tempEvent=true) at /usr/src/debug/kdelibs-4.2.1/khtml/xml/dom_nodeimpl.cpp:451
#13 0x00007fecafc7f160 in DOM::NodeImpl::dispatchKeyEvent (this=0x2030a70, key=0x7fffc6e88f60, keypress=<value optimized out>) at /usr/src/debug/kdelibs-4.2.1/khtml/xml/dom_nodeimpl.cpp:690
#14 0x00007fecafbedffd in KHTMLView::dispatchKeyEvent (this=0x1f1fdb0, _ke=0x7fffc6e88f60) at /usr/src/debug/kdelibs-4.2.1/khtml/khtmlview.cpp:1682
#15 0x00007fecafbf9264 in KHTMLView::keyPressEvent (this=0x1f1fdb0, _ke=0x7fffc6e88f60) at /usr/src/debug/kdelibs-4.2.1/khtml/khtmlview.cpp:1803
#16 0x00007fecafbf739f in KHTMLView::eventFilter (this=0x1f1fdb0, o=0x24c67b0, e=0x7fffc6e88f60) at /usr/src/debug/kdelibs-4.2.1/khtml/khtmlview.cpp:2341
#17 0x00007fecbc4c2238 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=<value optimized out>, receiver=0x24c67b0, event=0x7fffc6e88f60) at kernel/qcoreapplication.cpp:718
#18 0x00007fecbb722e5c in QApplicationPrivate::notify_helper (this=0x615390, receiver=0x24c67b0, e=0x7fffc6e88f60) at kernel/qapplication.cpp:4080
#19 0x00007fecbb72bfdf in QApplication::notify (this=<value optimized out>, receiver=0x24c67b0, e=0x7fffc6e88f60) at kernel/qapplication.cpp:3690
#20 0x00007fecbd2d5d5b in KApplication::notify (this=0x7fffc6e8a2e0, receiver=0x24c67b0, event=0x7fffc6e88f60) at /usr/src/debug/kdelibs-4.2.1/kdeui/kernel/kapplication.cpp:307
#21 0x00007fecbc4c2f3c in QCoreApplication::notifyInternal (this=0x7fffc6e8a2e0, receiver=0x24c67b0, event=0x7fffc6e88f60) at kernel/qcoreapplication.cpp:602
#22 0x00007fecbb7b65d4 in QKeyMapper::sendKeyEvent (keyWidget=0x24c67b0, grab=<value optimized out>, type=QEvent::KeyPress, code=16777220, modifiers={i = -957836912}, text=@0x7fffc6e89180, 
    autorepeat=false, count=1, nativeScanCode=36, nativeVirtualKey=65293, nativeModifiers=16) at kernel/qkeymapper_x11.cpp:1678
#23 0x00007fecbb7b8942 in QKeyMapperPrivate::translateKeyEvent (this=0x668240, keyWidget=0x24c67b0, event=0x7fffc6e89d50, grab=31) at kernel/qkeymapper_x11.cpp:1648
#24 0x00007fecbb792aad in QApplication::x11ProcessEvent (this=0x7fffc6e8a2e0, event=0x7fffc6e89d50) at kernel/qapplication_x11.cpp:3434
#25 0x00007fecbb7ba394 in x11EventSourceDispatch (s=0x618b50, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#26 0x00007fecb81080db in IA__g_main_context_dispatch (context=0x617d20) at gmain.c:2144
#27 0x00007fecb810b8ad in g_main_context_iterate (context=0x617d20, block=1, dispatch=1, self=<value optimized out>) at gmain.c:2778
#28 0x00007fecb810ba6b in IA__g_main_context_iteration (context=0x617d20, may_block=1) at gmain.c:2841
#29 0x00007fecbc4ec65f in QEventDispatcherGlib::processEvents (this=0x6113f0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:323
#30 0x00007fecbb7b9b1f in QGuiEventDispatcherGlib::processEvents (this=0x7fecbc135f80, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#31 0x00007fecbc4c17d2 in QEventLoop::processEvents (this=<value optimized out>, flags={i = -957833152}) at kernel/qeventloop.cpp:149
#32 0x00007fecbc4c1b9d in QEventLoop::exec (this=0x7fffc6e8a080, flags={i = -957833072}) at kernel/qeventloop.cpp:200
#33 0x00007fecbc4c3e84 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:880
#34 0x00007fecbea456a9 in kdemain () from /usr/lib64/libkdeinit4_konqueror.so
#35 0x00007fecb992a586 in __libc_start_main () from /lib64/libc.so.6
#36 0x00000000004007f9 in _start ()