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 2.6.31-16-generic x86_64
Distribution: Ubuntu 9.10

What I was doing when the application crashed:
depuis la dernière version d'ubuntu 9.10 - le Koala Karmique je ne peux plus graver de DVD DL, ce que je faisais très bien avant !

 -- Backtrace:
Application: K3b (k3b), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f656decc750 (LWP 2940))]

Thread 2 (Thread 0x7f6551795910 (LWP 2978)):
[KCrash Handler]
#5  0x00007f656dad5380 in K3b::Device::from4Byte(unsigned char*) () from /usr/lib/libk3bdevice.so.6
#6  0x00007f656dab6f5f in K3b::Device::Device::getSupportedWriteSpeedsViaGP(QList<int>&, K3b::Device::MediaType) const () from /usr/lib/libk3bdevice.so.6
#7  0x00007f656dabb77e in K3b::Device::Device::determineSupportedWriteSpeeds() const () from /usr/lib/libk3bdevice.so.6
#8  0x00007f656d78642e in K3b::Medium::update() () from /usr/lib/libk3b.so.6
#9  0x00007f656d78759c in K3b::MediaCache::PollThread::run() () from /usr/lib/libk3b.so.6
#10 0x00007f6567ec8445 in ?? () from /usr/lib/libQtCore.so.4
#11 0x00007f6564e93a04 in start_thread () from /lib/libpthread.so.0
#12 0x00007f656687b7bd in clone () from /lib/libc.so.6
#13 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f656decc750 (LWP 2940)):
#0  0x00007f656686f373 in poll () from /lib/libc.so.6
#1  0x00007f6564a7529a in ?? () from /usr/lib/libxcb.so.1
#2  0x00007f6564a757d7 in ?? () from /usr/lib/libxcb.so.1
#3  0x00007f6564a75a85 in xcb_writev () from /usr/lib/libxcb.so.1
#4  0x00007f656a722d4a in _XSend () from /usr/lib/libX11.so.6
#5  0x00007f6565e1b9ea in XRenderAddGlyphs () from /usr/lib/libXrender.so.1
#6  0x00007f65676e8b81 in QFontEngineX11FT::uploadGlyphToServer(QFontEngineFT::QGlyphSet*, unsigned int, QFontEngineFT::Glyph*, _XGlyphInfo*, int) const () from /usr/lib/libQtGui.so.4
#7  0x00007f65676f2ed2 in QFontEngineFT::loadGlyph(QFontEngineFT::QGlyphSet*, unsigned int, QFontEngineFT::GlyphFormat, bool) const () from /usr/lib/libQtGui.so.4
#8  0x00007f65676f4195 in QFontEngineFT::recalcAdvances(QGlyphLayout*, QFlags<QTextEngine::ShaperFlag>) const () from /usr/lib/libQtGui.so.4
#9  0x00007f656763466e in ?? () from /usr/lib/libQtGui.so.4
#10 0x00007f6567f31d04 in ?? () from /usr/lib/libQtCore.so.4
#11 0x00007f6567f2efe4 in ?? () from /usr/lib/libQtCore.so.4
#12 0x00007f6567660adb in QTextEngine::shapeTextWithHarfbuzz(int) const () from /usr/lib/libQtGui.so.4
#13 0x00007f65676612e0 in QTextEngine::shapeText(int) const () from /usr/lib/libQtGui.so.4
#14 0x00007f65676616db in QTextEngine::shape(int) const () from /usr/lib/libQtGui.so.4
#15 0x00007f6567667d64 in QTextLine::layout_helper(int) () from /usr/lib/libQtGui.so.4
#16 0x00007f65676a0f96 in ?? () from /usr/lib/libQtGui.so.4
#17 0x00007f65676a3b98 in ?? () from /usr/lib/libQtGui.so.4
#18 0x00007f65676a8128 in ?? () from /usr/lib/libQtGui.so.4
#19 0x00007f65676a866f in ?? () from /usr/lib/libQtGui.so.4
#20 0x00007f65676a88f8 in ?? () from /usr/lib/libQtGui.so.4
#21 0x00007f65676a898c in ?? () from /usr/lib/libQtGui.so.4
#22 0x00007f65676a8be5 in ?? () from /usr/lib/libQtGui.so.4
#23 0x00007f65676a9149 in ?? () from /usr/lib/libQtGui.so.4
#24 0x00007f6567679164 in QTextDocument::documentLayout() const () from /usr/lib/libQtGui.so.4
#25 0x00007f65676791a9 in QTextDocument::size() const () from /usr/lib/libQtGui.so.4
#26 0x0000000000516f94 in _start ()

Reported using DrKonqi