Application that crashed: konqueror
Version of the application: 4.3.2 (KDE 4.3.2)
KDE Version: 4.3.2 (KDE 4.3.2)
Qt Version: 4.5.2
Operating System: Linux 2.6.31-15-generic x86_64
Distribution: Ubuntu 9.10

What I was doing when the application crashed:
Reading Facebook "live feed" and commenting on several entries went very well. About four tabs with facebook open, one tab with linked In. Then I attempted to write a status oneliner (for the first time that session), and Konqueror just froze dead with 100% of one CPU core.
Kill -3 from top, restart restoring the session. Viewed a few photos in one tab, then went to the tab with my "Home" and attempted the staus update again, resulting in the recorded crash.

 -- Backtrace:
Application: Konqueror (kdeinit4), signal: Segmentation fault
The current source language is "auto; currently c".
[KCrash Handler]
#5  khtml::InputTextCommandImpl::prepareForTextInsertion (this=0x46ae040, adjustDownstream=<value optimized out>) at ../../khtml/editing/htmlediting_impl.cpp:1574
#6  0x00007f52d0361cc1 in khtml::InputTextCommandImpl::execute (this=0x46ae040, text=...) at ../../khtml/editing/htmlediting_impl.cpp:1650
#7  0x00007f52d035af97 in khtml::TypingCommandImpl::insertText (this=0x2aea6f0, text=...) at ../../khtml/editing/htmlediting_impl.cpp:2373
#8  0x00007f52d0354b28 in khtml::TypingCommand::insertText (document=0x2bb6840, text=...) at ../../khtml/editing/htmlediting.cpp:745
#9  0x00007f52d0350978 in DOM::Editor::handleKeyEvent (this=0x7113b90, _ke=<value optimized out>) at ../../khtml/editing/editor.cpp:528
#10 0x00007f52d01d7e02 in DOM::ElementImpl::defaultEventHandler (this=0x458e580, e=0x22af310) at ../../khtml/xml/dom_elementimpl.cpp:810
#11 0x00007f52d01cf3e4 in DOM::NodeImpl::dispatchGenericEvent (this=0x458e580, evt=0x22af310) at ../../khtml/xml/dom_nodeimpl.cpp:526
#12 0x00007f52d01cf5de in DOM::NodeImpl::dispatchEvent (this=0x458e580, evt=0x22af310, exceptioncode=@0x7fff4981b21c, tempEvent=true) at ../../khtml/xml/dom_nodeimpl.cpp:453
#13 0x00007f52d01cfee2 in DOM::NodeImpl::dispatchKeyEvent (this=<value optimized out>, key=0x7fff4981bba0, keypress=<value optimized out>) at ../../khtml/xml/dom_nodeimpl.cpp:694
#14 0x00007f52d0135ebd in KHTMLView::dispatchKeyEvent (this=0x2567f80, _ke=0x7fff4981bba0) at ../../khtml/khtmlview.cpp:1628
#15 0x00007f52d013e761 in KHTMLView::keyPressEvent (this=0x2567f80, _ke=0x7fff4981bba0) at ../../khtml/khtmlview.cpp:1749
#16 0x00007f52e4a3b872 in QWidget::event (this=0x2567f80, event=0x7fff4981bba0) at kernel/qwidget.cpp:7584
#17 0x00007f52e4d972a6 in QFrame::event (this=0x2567f80, e=0x7fff4981bba0) at widgets/qframe.cpp:559
#18 0x00007f52e4e26bc9 in QAbstractScrollArea::event (this=0x2567f80, e=0x7fff4981bba0) at widgets/qabstractscrollarea.cpp:918
#19 0x00007f52d013cdd7 in KHTMLView::event (this=0x2567f80, e=<value optimized out>) at ../../khtml/khtmlview.cpp:546
#20 0x00007f52e49ecefc in QApplicationPrivate::notify_helper (this=0x1d6de00, receiver=0x2567f80, e=0x7fff4981bba0) at kernel/qapplication.cpp:4056
#21 0x00007f52e49f4ce3 in QApplication::notify (this=<value optimized out>, receiver=0x2567f80, e=0x7fff4981bba0) at kernel/qapplication.cpp:3662
#22 0x00007f52e5623ab6 in KApplication::notify (this=0x7fff4981deb0, receiver=0x2567f80, event=0x7fff4981bba0) at ../../kdeui/kernel/kapplication.cpp:302
#23 0x00007f52e6a3cc2c in QCoreApplication::notifyInternal (this=0x7fff4981deb0, receiver=0x2567f80, event=0x7fff4981bba0) at kernel/qcoreapplication.cpp:610
#24 0x00007f52e4a7ddfa in QKeyMapper::sendKeyEvent (keyWidget=0x2567f80, grab=<value optimized out>, type=QEvent::KeyPress, code=84, modifiers=<value optimized out>, text=..., autorepeat=false, 
    count=1, nativeScanCode=28, nativeVirtualKey=84, nativeModifiers=1) at kernel/qkeymapper_x11.cpp:1861
#25 0x00007f52e4a80370 in QKeyMapperPrivate::translateKeyEvent (this=0x7fff4981bd80, keyWidget=0x2567f80, event=<value optimized out>, grab=80) at kernel/qkeymapper_x11.cpp:1831
#26 0x00007f52e4a58493 in QApplication::x11ProcessEvent (this=<value optimized out>, event=0x7fff4981d980) at kernel/qapplication_x11.cpp:3443
#27 0x00007f52e4a81d0c in x11EventSourceDispatch (s=<value optimized out>, callback=<value optimized out>, user_data=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:146
#28 0x00007f52e391dbbe in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#29 0x00007f52e3921588 in ?? () from /lib/libglib-2.0.so.0
#30 0x00007f52e39216b0 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#31 0x00007f52e6a651a6 in QEventDispatcherGlib::processEvents (this=0x1cd6040, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:327
#32 0x00007f52e4a814be in QGuiEventDispatcherGlib::processEvents (this=0x0, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#33 0x00007f52e6a3b532 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#34 0x00007f52e6a3b904 in QEventLoop::exec (this=0x7fff4981dcb0, flags=) at kernel/qeventloop.cpp:201
#35 0x00007f52e6a3dab9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#36 0x00007f52dbac2e26 in kdemain (argc=<value optimized out>, argv=<value optimized out>) at ../../../../apps/konqueror/src/konqmain.cpp:271
#37 0x0000000000406da8 in launch (argc=2, _name=<value optimized out>, args=<value optimized out>, cwd=<value optimized out>, envc=16, envs=<value optimized out>, reset_env=false, tty=0x0, 
    avoid_loops=false, startup_id_str=0x1d1a424 "nyx;1259273286;884343;1682_TIME6620910") at ../../kinit/kinit.cpp:677
#38 0x0000000000407aa0 in handle_launcher_request (sock=7, who=<value optimized out>) at ../../kinit/kinit.cpp:1169
#39 0x0000000000407f51 in handle_requests (waitForPid=0) at ../../kinit/kinit.cpp:1362
#40 0x0000000000408bb2 in main (argc=2, argv=<value optimized out>, envp=<value optimized out>) at ../../kinit/kinit.cpp:1793

This bug may be a duplicate of or related to bug 207919

Reported using DrKonqi