Application that crashed: k3b
Version of the application: 1.68.0
KDE Version: 4.3.2 (KDE 4.3.2)
Qt Version: 4.5.2
Operating System: Linux 2.6.31-14-generic i686
Distribution: Ubuntu 9.10

What I was doing when the application crashed:
copying a one layer DVD, while (unattended) reading the disk.
It happend while the screen was'nt visible, because i use my desktop and my laptop with an kvm-switch

 -- Backtrace:
Application: K3b (k3b), signal: Segmentation fault
[Current thread is 1 (Thread 0xb7823920 (LWP 2844))]

Thread 2 (Thread 0xb4d27b70 (LWP 3633)):
[KCrash Handler]
#6  0x00b159ad in K3b::Device::Track::firstSector() const () from /usr/lib/libk3bdevice.so.6
#7  0x005a9ea4 in K3b::Medium::analyseContent() () from /usr/lib/libk3b.so.6
#8  0x005aabd0 in K3b::Medium::update() () from /usr/lib/libk3b.so.6
#9  0x005ac25a in K3b::MediaCache::PollThread::run() () from /usr/lib/libk3b.so.6
#10 0x030c6e32 in ?? () from /usr/lib/libQtCore.so.4
#11 0x0089c80e in start_thread (arg=0xb4d27b70) at pthread_create.c:300
#12 0x056587ee in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 1 (Thread 0xb7823920 (LWP 2844)):
#0  0x008d5422 in __kernel_vsyscall ()
#1  0x008a0e15 in pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:122
#2  0x0566578d in __pthread_cond_wait (cond=0x8eff658, mutex=0x8eff640) at forward.c:139
#3  0x030c64d2 in ?? () from /usr/lib/libQtCore.so.4
#4  0x030c1ba2 in QMutex::lock() () from /usr/lib/libQtCore.so.4
#5  0x005ac4c5 in K3b::MediaCache::resetDevice(K3b::Device::Device*) () from /usr/lib/libk3b.so.6
#6  0x00568483 in K3b::eject(K3b::Device::Device*) () from /usr/lib/libk3b.so.6
#7  0x005f741e in K3b::DvdCopyJob::slotReaderFinished(bool) () from /usr/lib/libk3b.so.6
#8  0x005f9ade in K3b::DvdCopyJob::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libk3b.so.6
#9  0x031cd263 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQtCore.so.4
#10 0x031cdec2 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#11 0x00576729 in K3b::Job::finished(bool) () from /usr/lib/libk3b.so.6
#12 0x0057790a in K3b::Job::jobFinished(bool) () from /usr/lib/libk3b.so.6
#13 0x005792a6 in K3b::ThreadJob::slotThreadFinished() () from /usr/lib/libk3b.so.6
#14 0x0057933b in K3b::ThreadJob::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libk3b.so.6
#15 0x005e2ad2 in ?? () from /usr/lib/libk3b.so.6
#16 0x031c5f0b in QMetaCallEvent::placeMetaCall(QObject*) () from /usr/lib/libQtCore.so.4
#17 0x031c75fe in QObject::event(QEvent*) () from /usr/lib/libQtCore.so.4
#18 0x01f4ef54 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#19 0x01f5667c in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#20 0x04d28bfa in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#21 0x031b76cb in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#22 0x031b82b2 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/libQtCore.so.4
#23 0x031b847d in QCoreApplication::sendPostedEvents(QObject*, int) () from /usr/lib/libQtCore.so.4
#24 0x031e23ff in ?? () from /usr/lib/libQtCore.so.4
#25 0x02868e78 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#26 0x0286c720 in ?? () from /lib/libglib-2.0.so.0
#27 0x0286c853 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#28 0x031e202c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#29 0x01fefbe5 in ?? () from /usr/lib/libQtGui.so.4
#30 0x031b5c79 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#31 0x031b60ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#32 0x0243bd53 in QDialog::exec() () from /usr/lib/libQtGui.so.4
#33 0x08189f18 in _start ()

Reported using DrKonqi