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 2.6.31-20-generic i686
Distribution: Ubuntu 9.10

What I was doing when the application crashed:
K3b crash after open iso image to burn at dvd-rw. 

 -- Backtrace:
Application: K3b (k3b), signal: Segmentation fault
[Current thread is 1 (Thread 0xb77f0920 (LWP 15301))]

Thread 3 (Thread 0xb564ab70 (LWP 15325)):
[KCrash Handler]
#6  0x004e3287 in K3b::Device::from4Byte(unsigned char*) () from /usr/lib/libk3bdevice.so.6
#7  0x004c6173 in K3b::Device::Device::determineSupportedWriteSpeeds() const () from /usr/lib/libk3bdevice.so.6
#8  0x00853e1c in K3b::Medium::update() () from /usr/lib/libk3b.so.6
#9  0x0085525a in K3b::MediaCache::PollThread::run() () from /usr/lib/libk3b.so.6
#10 0x01e2ae32 in ?? () from /usr/lib/libQtCore.so.4
#11 0x00c1680e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#12 0x046908de in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 2 (Thread 0xb4e49b70 (LWP 15326)):
#0  0x00597422 in __kernel_vsyscall ()
#1  0x00c1b142 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0x0469d8d4 in pthread_cond_timedwait () from /lib/tls/i686/cmov/libc.so.6
#3  0x01e2a81e in ?? () from /usr/lib/libQtCore.so.4
#4  0x01e2a9c0 in QThread::sleep(unsigned long) () from /usr/lib/libQtCore.so.4
#5  0x008552e9 in K3b::MediaCache::PollThread::run() () from /usr/lib/libk3b.so.6
#6  0x01e2ae32 in ?? () from /usr/lib/libQtCore.so.4
#7  0x00c1680e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#8  0x046908de in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb77f0920 (LWP 15301)):
#0  0x00597422 in __kernel_vsyscall ()
#1  0x04682c96 in poll () from /lib/tls/i686/cmov/libc.so.6
#2  0x005e9d80 in ?? () from /usr/lib/libxcb.so.1
#3  0x005eb9d2 in xcb_wait_for_reply () from /usr/lib/libxcb.so.1
#4  0x009ab506 in _XReply () from /usr/lib/libX11.so.6
#5  0x00988519 in XGetImage () from /usr/lib/libX11.so.6
#6  0x033e8927 in QX11PixmapData::transformed(QTransform const&, Qt::TransformationMode) const () from /usr/lib/libQtGui.so.4
#7  0x033d2cfd in QPixmap::transformed(QTransform const&, Qt::TransformationMode) const () from /usr/lib/libQtGui.so.4
#8  0x033d38e6 in QPixmap::scaled(QSize const&, Qt::AspectRatioMode, Qt::TransformationMode) const () from /usr/lib/libQtGui.so.4
#9  0x0815c802 in _start ()

Reported using DrKonqi