Application that crashed: konqueror
Version of the application: 4.3.3 (KDE 4.3.3)
KDE Version: 4.3.3 (KDE 4.3.3)
Qt Version: 4.5.3
Operating System: Linux 2.6.31-ARCH i686

What I was doing when the application crashed:
Konqueror crashes when you continously press backspace in the mail field of yahoo webmail. Could not reproduce using gmail or facebook comments.

Steps to reproduce

1. log into yahoo webmail
2. click on new /compose message
3. click on message body. 
4. press backspace a few times.

Pl. note that this is not the same as the bug I reported earlier which has been fixed with 4.3.3 where Konquerer crashed on clicking the various input text fields.

 -- Backtrace:
Application: Konqueror (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0xb57b1700 (LWP 3853))]

Thread 3 (Thread 0xb0b80b70 (LWP 3857)):
#0  0xb78b5424 in __kernel_vsyscall ()
#1  0xb765b192 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#2  0xb76b48bf in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/libQtCore.so.4
#3  0xb76aa10e in ?? () from /usr/lib/libQtCore.so.4
#4  0xb76b3922 in ?? () from /usr/lib/libQtCore.so.4
#5  0xb76568ac in start_thread () from /lib/libpthread.so.0
#6  0xb61b2a9e in clone () from /lib/libc.so.6

Thread 2 (Thread 0xafeffb70 (LWP 3858)):
#0  0xb78b5424 in __kernel_vsyscall ()
#1  0xb765b192 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#2  0xb76b48bf in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/libQtCore.so.4
#3  0xb76aa10e in ?? () from /usr/lib/libQtCore.so.4
#4  0xb76b3922 in ?? () from /usr/lib/libQtCore.so.4
#5  0xb76568ac in start_thread () from /lib/libpthread.so.0
#6  0xb61b2a9e in clone () from /lib/libc.so.6

Thread 1 (Thread 0xb57b1700 (LWP 3853)):
[KCrash Handler]
#6  0xb24e11bc in khtml::debugPosition(char const*, DOM::Position const&) () from /usr/lib/libkhtml.so.5
#7  0xb24ea21d in khtml::DeleteSelectionCommandImpl::doApply() () from /usr/lib/libkhtml.so.5
#8  0xb24de5f5 in khtml::EditCommandImpl::apply() () from /usr/lib/libkhtml.so.5
#9  0xb24db457 in khtml::EditCommand::apply() () from /usr/lib/libkhtml.so.5
#10 0xb24e4a93 in khtml::CompositeEditCommandImpl::applyCommandToComposite(khtml::EditCommand&) () from /usr/lib/libkhtml.so.5
#11 0xb24e557f in khtml::CompositeEditCommandImpl::deleteSelection(DOM::Selection const&) () from /usr/lib/libkhtml.so.5
#12 0xb24ee2f4 in khtml::TypingCommandImpl::issueCommandForDeleteKey() () from /usr/lib/libkhtml.so.5
#13 0xb24dba63 in khtml::TypingCommand::deleteKeyPressed() () from /usr/lib/libkhtml.so.5
#14 0xb24ddd97 in khtml::TypingCommand::deleteKeyPressed(DOM::DocumentImpl*) () from /usr/lib/libkhtml.so.5
#15 0xb24d9c04 in DOM::Editor::handleKeyEvent(QKeyEvent*) () from /usr/lib/libkhtml.so.5
#16 0xb2350a28 in DOM::ElementImpl::defaultEventHandler(DOM::EventImpl*) () from /usr/lib/libkhtml.so.5
#17 0xb2347728 in DOM::NodeImpl::dispatchGenericEvent(DOM::EventImpl*, int&) () from /usr/lib/libkhtml.so.5
#18 0xb2347924 in DOM::NodeImpl::dispatchEvent(DOM::EventImpl*, int&, bool) () from /usr/lib/libkhtml.so.5
#19 0xb23481fd in DOM::NodeImpl::dispatchKeyEvent(QKeyEvent*, bool) () from /usr/lib/libkhtml.so.5
#20 0xb229dd40 in KHTMLView::dispatchKeyEventHelper(QKeyEvent*, bool) () from /usr/lib/libkhtml.so.5
#21 0xb22a0fd0 in KHTMLView::dispatchKeyEvent(QKeyEvent*) () from /usr/lib/libkhtml.so.5
#22 0xb22aa2ee in KHTMLView::keyPressEvent(QKeyEvent*) () from /usr/lib/libkhtml.so.5
#23 0xb2433ee4 in khtml::RenderWidget::EventPropagator::sendEvent(QEvent*) () from /usr/lib/libkhtml.so.5
#24 0xb2437c2c in khtml::RenderWidget::handleEvent(DOM::EventImpl const&) () from /usr/lib/libkhtml.so.5
#25 0xb23a5029 in DOM::HTMLFrameElementImpl::defaultEventHandler(DOM::EventImpl*) () from /usr/lib/libkhtml.so.5
#26 0xb2347728 in DOM::NodeImpl::dispatchGenericEvent(DOM::EventImpl*, int&) () from /usr/lib/libkhtml.so.5
#27 0xb2347924 in DOM::NodeImpl::dispatchEvent(DOM::EventImpl*, int&, bool) () from /usr/lib/libkhtml.so.5
#28 0xb23481fd in DOM::NodeImpl::dispatchKeyEvent(QKeyEvent*, bool) () from /usr/lib/libkhtml.so.5
#29 0xb229dd40 in KHTMLView::dispatchKeyEventHelper(QKeyEvent*, bool) () from /usr/lib/libkhtml.so.5
#30 0xb22a0fd0 in KHTMLView::dispatchKeyEvent(QKeyEvent*) () from /usr/lib/libkhtml.so.5
#31 0xb22aa2ee in KHTMLView::keyPressEvent(QKeyEvent*) () from /usr/lib/libkhtml.so.5
#32 0xb22a86cf in KHTMLView::eventFilter(QObject*, QEvent*) () from /usr/lib/libkhtml.so.5
#33 0xb77a103a in QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#34 0xb642f37c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#35 0xb6437b01 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#36 0xb6e7258a in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#37 0xb77a1e8b in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#38 0xb643027e in ?? () from /usr/lib/libQtGui.so.4
#39 0xb64c9aed in ?? () from /usr/lib/libQtGui.so.4
#40 0xb64cbf8c in ?? () from /usr/lib/libQtGui.so.4
#41 0xb64a26a7 in QApplication::x11ProcessEvent(_XEvent*) () from /usr/lib/libQtGui.so.4
#42 0xb64cda52 in ?? () from /usr/lib/libQtGui.so.4
#43 0xb6047328 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#44 0xb604aba0 in g_main_context_iterate () from /usr/lib/libglib-2.0.so.0
#45 0xb604acd3 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#46 0xb77cc5f5 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#47 0xb64cd185 in ?? () from /usr/lib/libQtGui.so.4
#48 0xb77a0479 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#49 0xb77a08ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#50 0xb77a2d3f in QCoreApplication::exec() () from /usr/lib/libQtCore.so.4
#51 0xb642f227 in QApplication::exec() () from /usr/lib/libQtGui.so.4
#52 0xb419ef09 in kdemain () from /usr/lib/libkdeinit4_konqueror.so
#53 0x0804de22 in _start ()

Reported using DrKonqi