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 2.6.31-19-generic i686
Distribution: Ubuntu 9.10

What I was doing when the application crashed:
I plugged in my nokia phone set to storage mode, the plasmoid notified me that a new usb device is plugged in, but the notification panel did not disappear, I clicked on it and hit escape, and the konqueror crashed. 

 -- Backtrace:
Application: Konqueror (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0xb7744700 (LWP 1565))]

Thread 3 (Thread 0xb2e4fb70 (LWP 3763)):
#0  0x00be2422 in __kernel_vsyscall ()
#1  0x007e3142 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0x01a488d4 in pthread_cond_timedwait () from /lib/tls/i686/cmov/libc.so.6
#3  0x0015fdef in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/libQtCore.so.4
#4  0x001549ae in ?? () from /usr/lib/libQtCore.so.4
#5  0x0015ee32 in ?? () from /usr/lib/libQtCore.so.4
#6  0x007de80e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#7  0x01a3b8de in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 2 (Thread 0xb42afb70 (LWP 3766)):
#0  0x00be2422 in __kernel_vsyscall ()
#1  0x007e3142 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0x01a488d4 in pthread_cond_timedwait () from /lib/tls/i686/cmov/libc.so.6
#3  0x0015fdef in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/libQtCore.so.4
#4  0x001549ae in ?? () from /usr/lib/libQtCore.so.4
#5  0x0015ee32 in ?? () from /usr/lib/libQtCore.so.4
#6  0x007de80e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#7  0x01a3b8de in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb7744700 (LWP 1565)):
[KCrash Handler]
#6  0x02b96129 in KHTMLPart::handleMouseMoveEventDrag(khtml::MouseMoveEvent*) () from /usr/lib/libkhtml.so.5
#7  0x02ba050c in KHTMLPart::khtmlMouseMoveEvent(khtml::MouseMoveEvent*) () from /usr/lib/libkhtml.so.5
#8  0x02b866cf in KHTMLPart::customEvent(QEvent*) () from /usr/lib/libkhtml.so.5
#9  0x0025f65f in QObject::event(QEvent*) () from /usr/lib/libQtCore.so.4
#10 0x034eff54 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#11 0x034f767c in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#12 0x00e57bfa in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#13 0x0024f6cb in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#14 0x02b78971 in KHTMLView::mouseMoveEvent(QMouseEvent*) () from /usr/lib/libkhtml.so.5
#15 0x03544e63 in QWidget::event(QEvent*) () from /usr/lib/libQtGui.so.4
#16 0x038f4633 in QFrame::event(QEvent*) () from /usr/lib/libQtGui.so.4
#17 0x02b750ec in KHTMLView::widgetEvent(QEvent*) () from /usr/lib/libkhtml.so.5
#18 0x02b753d5 in KHTMLView::eventFilter(QObject*, QEvent*) () from /usr/lib/libkhtml.so.5
#19 0x0024e83a in QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#20 0x034eff2c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#21 0x034f8033 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#22 0x00e57bfa in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#23 0x0024f6cb in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#24 0x034f6f6e in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&) () from /usr/lib/libQtGui.so.4
#25 0x035657c0 in ?? () from /usr/lib/libQtGui.so.4
#26 0x03564c4b in QApplication::x11ProcessEvent(_XEvent*) () from /usr/lib/libQtGui.so.4
#27 0x03591502 in ?? () from /usr/lib/libQtGui.so.4
#28 0x0038ae88 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#29 0x0038e730 in ?? () from /lib/libglib-2.0.so.0
#30 0x0038e863 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#31 0x0027a02c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#32 0x03590be5 in ?? () from /usr/lib/libQtGui.so.4
#33 0x0024dc79 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#34 0x0024e0ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#35 0x0025053f in QCoreApplication::exec() () from /usr/lib/libQtCore.so.4
#36 0x034efdd7 in QApplication::exec() () from /usr/lib/libQtGui.so.4
#37 0x014b759f in kdemain () from /usr/lib/libkdeinit4_konqueror.so
#38 0x0804dde1 in _start ()

Reported using DrKonqi