Application: k3b (1.91.0)
KDE Platform Version: 4.4.2 (KDE 4.4.2)
Qt Version: 4.6.2
Operating System: Linux 2.6.32-24-generic x86_64
Distribution: Ubuntu 10.04.1 LTS

-- Information about the crash:
I had K3B open and was about to burn an iso to a disc.  I put a disc in the drive (DVD+RW drive, the disc was a DVD+RW) but the disc was unreadable.  The entire desktop locked up and when it unlocked again, K3B crashed.  I did not try to repeat this - I discarded the unreadable disc.

 -- Backtrace:
Application: K3b (k3b), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f83b8c48760 (LWP 13227))]

Thread 4 (Thread 0x7f839f1ed710 (LWP 13248)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:211
#1  0x00007f83b355a0e5 in thread_sleep (ti=0x7f839f1ecd80) at thread/qthread_unix.cpp:398
#2  0x00007f83b355a296 in QThread::sleep (secs=<value optimized out>) at thread/qthread_unix.cpp:412
#3  0x00007f83b8517d45 in K3b::MediaCache::PollThread::run (this=0x1f61520) at /build/buildd/k3b-1.91.0~rc2/libk3b/tools/k3bmediacache.cpp:106
#4  0x00007f83b355a775 in QThreadPrivate::start (arg=0x1f61520) at thread/qthread_unix.cpp:248
#5  0x00007f83b32ca9ca in start_thread (arg=<value optimized out>) at pthread_create.c:300
#6  0x00007f83b19696fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#7  0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f839c97f710 (LWP 13270)):
#0  0x00007f83b195cf83 in *__GI___poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f83ad9344a9 in ?? () from /lib/libglib-2.0.so.0
#2  0x00007f83ad9348fc in g_main_context_iteration () from /lib/libglib-2.0.so.0
#3  0x00007f83b3678566 in QEventDispatcherGlib::processEvents (this=0x234ee70, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:414
#4  0x00007f83b364d992 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#5  0x00007f83b364dd6c in QEventLoop::exec (this=0x7f839c97edb0, flags=) at kernel/qeventloop.cpp:201
#6  0x00007f83b3557d59 in QThread::exec (this=<value optimized out>) at thread/qthread.cpp:487
#7  0x00007f83b362e178 in QInotifyFileSystemWatcherEngine::run (this=0x1f2e170) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f83b355a775 in QThreadPrivate::start (arg=0x1f2e170) at thread/qthread_unix.cpp:248
#9  0x00007f83b32ca9ca in start_thread (arg=<value optimized out>) at pthread_create.c:300
#10 0x00007f83b19696fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f8397fff710 (LWP 13271)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f83b5e81ca6 in WTF::TCMalloc_PageHeap::scavengerThread (this=0x7f83b6e43e80) at ../JavaScriptCore/wtf/FastMalloc.cpp:2299
#2  0x00007f83b5e81ce9 in WTF::TCMalloc_PageHeap::runScavengerThread (context=0x7f83b6e51f4c) at ../JavaScriptCore/wtf/FastMalloc.cpp:1433
#3  0x00007f83b32ca9ca in start_thread (arg=<value optimized out>) at pthread_create.c:300
#4  0x00007f83b19696fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f83b8c48760 (LWP 13227)):
[KCrash Handler]
#5  0x0000010000000020 in ?? ()
#6  0x00007f83b633a995 in QWebPage::event (this=0x2366e00, ev=0x7fffbaf069b0) at ../WebKit/qt/Api/qwebpage.cpp:2522
#7  0x00007f83b633e038 in QWebView::contextMenuEvent (this=<value optimized out>, ev=0x7fffbaf069b0) at ../WebKit/qt/Api/qwebview.cpp:932
#8  0x00007f83b25c7f68 in QWidget::event (this=0x220cc10, event=0x7fffbaf069b0) at kernel/qwidget.cpp:8165
#9  0x00007f83b633e6ed in QWebView::event (this=0x220cc10, e=0x7fffbaf069b0) at ../WebKit/qt/Api/qwebview.cpp:761
#10 0x00007f83b257222c in QApplicationPrivate::notify_helper (this=0x1d6d6a0, receiver=0x220cc10, e=0x7fffbaf069b0) at kernel/qapplication.cpp:4300
#11 0x00007f83b25788c3 in QApplication::notify (this=0x7fffbaf076e0, receiver=0x220cc10, e=0x7fffbaf069b0) at kernel/qapplication.cpp:3944
#12 0x00007f83b4808526 in KApplication::notify (this=0x7fffbaf076e0, receiver=0x220cc10, event=0x7fffbaf069b0) at ../../kdeui/kernel/kapplication.cpp:302
#13 0x00007f83b364f06c in QCoreApplication::notifyInternal (this=0x7fffbaf076e0, receiver=0x220cc10, event=0x7fffbaf069b0) at kernel/qcoreapplication.cpp:704
#14 0x00007f83b25f7fb2 in QETWidget::translateMouseEvent (this=<value optimized out>, event=<value optimized out>) at kernel/qapplication_x11.cpp:4373
#15 0x00007f83b25f68ac in QApplication::x11ProcessEvent (this=<value optimized out>, event=0x7fffbaf07300) at kernel/qapplication_x11.cpp:3501
#16 0x00007f83b2622882 in x11EventSourceDispatch (s=0x1d73430, callback=<value optimized out>, user_data=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:146
#17 0x00007f83ad9308c2 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#18 0x00007f83ad934748 in ?? () from /lib/libglib-2.0.so.0
#19 0x00007f83ad9348fc in g_main_context_iteration () from /lib/libglib-2.0.so.0
#20 0x00007f83b3678513 in QEventDispatcherGlib::processEvents (this=0x1d3a230, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:412
#21 0x00007f83b262246e in QGuiEventDispatcherGlib::processEvents (this=0x2650770, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#22 0x00007f83b364d992 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#23 0x00007f83b364dd6c in QEventLoop::exec (this=0x7fffbaf07630, flags=) at kernel/qeventloop.cpp:201
#24 0x00007f83b3651aab in QCoreApplication::exec () at kernel/qcoreapplication.cpp:981
#25 0x0000000000536b78 in main (argc=<value optimized out>, argv=<value optimized out>) at /build/buildd/k3b-1.91.0~rc2/src/main.cpp:165

Reported using DrKonqi