Application that crashed: konqueror
Version of the application: 4.2.96 (KDE 4.2.96 (KDE 4.3 RC2))
KDE Version: 4.2.96 (KDE 4.2.96 (KDE 4.3 RC2))
Qt Version: 4.5.1
Operating System: Linux 2.6.27-gentoo-r7 x86_64

What I was doing when the application crashed:
Turned on JS debugger, reloaded Facebook Home

 -- Backtrace:
Application: Konqueror (kdeinit4), signal: Segmentation fault
[Current thread is 0 (LWP 3893)]

Thread 2 (Thread 0x7f1bedd36950 (LWP 4298)):
#0  0x00007f1c050cd03d in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x00007f1c05338d57 in QWaitCondition::wait () from /usr/lib64/qt4/libQtCore.so.4
#2  0x00007f1c05330161 in ?? () from /usr/lib64/qt4/libQtCore.so.4
#3  0x00007f1c05338039 in ?? () from /usr/lib64/qt4/libQtCore.so.4
#4  0x00007f1c050c9007 in start_thread () from /lib/libpthread.so.0
#5  0x00007f1c01fdf48d in clone () from /lib/libc.so.6
#6  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f1c058bf760 (LWP 3893)):
[KCrash Handler]
#5  0x00007f1bf7f856f0 in QString (this=0x7fff0d8f43e0, other=@0x20) at /usr/include/qt4/QtCore/qstring.h:711
#6  0x00007f1bf82fe8ea in KJSDebugger::DebugDocument::name (this=0x0) at /var/tmp/portage/kde-base/kdelibs-4.2.96/work/kdelibs-4.2.96/khtml/ecma/debugger/debugdocument.cpp:81
#7  0x00007f1bf82f3230 in KJSDebugger::DebugWindow::enterContext (this=0x2e36fa0, exec=0x7fff0d8f4470, sourceId=590, lineno=172, function=0x7f1beff408c0, args=@0x7fff0d8f4f70)
    at /var/tmp/portage/kde-base/kdelibs-4.2.96/work/kdelibs-4.2.96/khtml/ecma/debugger/debugwindow.cpp:735
#8  0x00007f1bf7afb216 in KJS::FunctionImp::callAsFunction (this=0x7f1beff408c0, exec=0x7fff0d8f8380, thisObj=0x7f1c05821700, args=@0x7fff0d8f4f70)
    at /var/tmp/portage/kde-base/kdelibs-4.2.96/work/kdelibs-4.2.96/kjs/function.cpp:135
#9  0x00007f1bf7b0278e in KJS::JSObject::call (this=0x7f1beff408c0, exec=0x7fff0d8f8380, thisObj=0x7f1c05821700, args=@0x7fff0d8f4f70)
    at /var/tmp/portage/kde-base/kdelibs-4.2.96/work/kdelibs-4.2.96/kjs/object.cpp:69
#10 0x00007f1bf7b2c749 in KJS::Machine::runBlock (exec=0x7fff0d8f8380, codeBlock=@0x20cca20, parentExec=0x0) at codes.def:1192
#11 0x00007f1bf7ac1e5f in KJS::FunctionBodyNode::execute (this=0x20cc990, exec=0x7fff0d8f8380) at /var/tmp/portage/kde-base/kdelibs-4.2.96/work/kdelibs-4.2.96/kjs/nodes.cpp:928
#12 0x00007f1bf7b083ee in KJS::Interpreter::evaluate (this=0x5c746b0, sourceURL=@0x7fff0d8f8710, startingLineNumber=1, code=0x3be0be0, codeLength=14, thisV=0x7f1c05821700)
    at /var/tmp/portage/kde-base/kdelibs-4.2.96/work/kdelibs-4.2.96/kjs/interpreter.cpp:556
#13 0x00007f1bf7b0861b in KJS::Interpreter::evaluate (this=0x5c746b0, sourceURL=@0x7fff0d8f8710, startingLineNumber=1, code=@0x7fff0d8f8700, thisV=0x7f1c05821700)
    at /var/tmp/portage/kde-base/kdelibs-4.2.96/work/kdelibs-4.2.96/kjs/interpreter.cpp:496
#14 0x00007f1bf82b5044 in KJS::KJSProxyImpl::evaluate (this=0x354f890, filename=
      {static null = {<No data fields>}, static shared_null = {ref = {_q_value = 193500}, alloc = 0, size = 0, data = 0x60e5ba, clean = 0, simpletext = 0, righttoleft = 0, asciiCache = 0, capacity = 0, reserved = 0, array = {0}}, static shared_empty = {ref = {_q_value = 340}, alloc = 0, size = 0, data = 0x7f1c056dc79a, clean = 0, simpletext = 0, righttoleft = 0, asciiCache = 0, capacity = 0, reserved = 0, array = {0}}, d = 0x7fff0d8f8840, static codecForCStrings = 0x0}, baseLine=1, str=@0xa365910, n=@0x7fff0d8f8910, completion=0x7fff0d8f8820)
    at /var/tmp/portage/kde-base/kdelibs-4.2.96/work/kdelibs-4.2.96/khtml/ecma/kjs_proxy.cpp:158
#15 0x00007f1bf7fb7532 in KHTMLPart::executeScript (this=0x18a4900, n=@0x7fff0d8f8910, script=@0xa365910) at /var/tmp/portage/kde-base/kdelibs-4.2.96/work/kdelibs-4.2.96/khtml/khtml_part.cpp:1376
#16 0x00007f1bf8296746 in KJS::ScheduledAction::execute (this=0xa365900, window=0x7f1c05821700) at /var/tmp/portage/kde-base/kdelibs-4.2.96/work/kdelibs-4.2.96/khtml/ecma/kjs_window.cpp:2183
#17 0x00007f1bf82969ad in KJS::WindowQObject::timerEvent (this=0x7111ea0) at /var/tmp/portage/kde-base/kdelibs-4.2.96/work/kdelibs-4.2.96/khtml/ecma/kjs_window.cpp:2349
#18 0x00007f1c05418f13 in QObject::event () from /usr/lib64/qt4/libQtCore.so.4
#19 0x00007f1c02ba47ad in QApplicationPrivate::notify_helper () from /usr/lib64/qt4/libQtGui.so.4
#20 0x00007f1c02bad07a in QApplication::notify () from /usr/lib64/qt4/libQtGui.so.4
#21 0x00007f1c03ba1eaa in KApplication::notify (this=0x7fff0d8f96f0, receiver=0x7111ea0, event=0x7fff0d8f90e0)
    at /var/tmp/portage/kde-base/kdelibs-4.2.96/work/kdelibs-4.2.96/kdeui/kernel/kapplication.cpp:302
#22 0x00007f1c0540a673 in QCoreApplication::notifyInternal () from /usr/lib64/qt4/libQtCore.so.4
#23 0x00007f1c054313ee in ?? () from /usr/lib64/qt4/libQtCore.so.4
#24 0x00007f1c054316f8 in QEventDispatcherUNIX::processEvents () from /usr/lib64/qt4/libQtCore.so.4
#25 0x00007f1c02c29ea2 in ?? () from /usr/lib64/qt4/libQtGui.so.4
#26 0x00007f1c05409072 in QEventLoop::processEvents () from /usr/lib64/qt4/libQtCore.so.4
#27 0x00007f1c05409205 in QEventLoop::exec () from /usr/lib64/qt4/libQtCore.so.4
#28 0x00007f1c0540b184 in QCoreApplication::exec () from /usr/lib64/qt4/libQtCore.so.4
#29 0x00007f1bfd487ccd in kdemain (argc=2, argv=0x6125d0) at /var/tmp/portage/kde-base/konqueror-4.2.96/work/konqueror-4.2.96/konqueror/src/konqmain.cpp:257
#30 0x000000000040789c in launch (argc=2, _name=0x63cc98 "/usr/bin/konqueror", args=0x63ccb4 "", cwd=0x0, envc=0, envs=0x63ccbc "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x63ccc4 "tsuruki;1247937068;962424;3498_TIME3672561826") at /var/tmp/portage/kde-base/kdelibs-4.2.96/work/kdelibs-4.2.96/kinit/kinit.cpp:676
#31 0x000000000040806b in handle_launcher_request (sock=7, who=0x40b604 "launcher") at /var/tmp/portage/kde-base/kdelibs-4.2.96/work/kdelibs-4.2.96/kinit/kinit.cpp:1168
#32 0x0000000000408873 in handle_requests (waitForPid=0) at /var/tmp/portage/kde-base/kdelibs-4.2.96/work/kdelibs-4.2.96/kinit/kinit.cpp:1361
#33 0x0000000000409100 in main (argc=2, argv=0x7fff0d8fad78, envp=0x7fff0d8fad90) at /var/tmp/portage/kde-base/kdelibs-4.2.96/work/kdelibs-4.2.96/kinit/kinit.cpp:1788

Reported using DrKonqi