Application: dolphin (1.4)
KDE Platform Version: 4.3.95 (KDE 4.3.95 (KDE 4.4 RC2))
Qt Version: 4.6.0
Operating System: Linux 2.6.31-18-generic i686
Distribution: Ubuntu 9.10

-- Information about the crash:
I grabbed the vertical scrollbar and tried to scroll up and then Dolphin crashed. However, it didn't crash before when scrolling and I was unable to reproduce it, so it's certainly not the only condition to trigger the bug (if at all).

The crash does not seem to be reproducible.

 -- Backtrace:
Application: Dolphin (dolphin), signal: Segmentation fault
[Current thread is 1 (Thread 0xb77d3760 (LWP 4433))]

Thread 3 (Thread 0xb5fd3b70 (LWP 4479)):
#0  0x00c8a422 in __kernel_vsyscall ()
#1  0x00541142 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0x02d038d4 in pthread_cond_timedwait () from /lib/tls/i686/cmov/libc.so.6
#3  0x04c3a9ff in metronom_sync_loop (this=0xa417f58) at metronom.c:870
#4  0x0053c80e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#5  0x02cf68de in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 2 (Thread 0xb13a3b70 (LWP 4604)):
[KCrash Handler]
#6  0x04227b59 in QMetaObject::activate (sender=0xa105920, m=0x80cc4e0, local_signal_index=0, argv=0x0) at kernel/qobject.cpp:3217
#7  0x04276647 in QThread::started (this=0xa105920) at .moc/release-shared/moc_qthread.cpp:99
#8  0x0411238d in QThreadPrivate::start (arg=0xa105920) at thread/qthread_unix.cpp:239
#9  0x0053c80e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#10 0x02cf68de in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb77d3760 (LWP 4433)):
#0  0x00540164 in __pthread_mutex_unlock_usercnt () from /lib/tls/i686/cmov/libpthread.so.0
#1  0x02d03a86 in pthread_mutex_unlock () from /lib/tls/i686/cmov/libc.so.6
#2  0x00e67d61 in ?? () from /usr/lib/libxcb.so.1
#3  0x00e682eb in ?? () from /usr/lib/libxcb.so.1
#4  0x00e68687 in xcb_writev () from /usr/lib/libxcb.so.1
#5  0x00d132e9 in _XSend () from /usr/lib/libX11.so.6
#6  0x00d13480 in _XReply () from /usr/lib/libX11.so.6
#7  0x00cf0519 in XGetImage () from /usr/lib/libX11.so.6
#8  0x05399198 in QX11PixmapData::toImage (this=0xa3ecf10) at image/qpixmap_x11.cpp:1475
#9  0x0538380b in QPixmap::toImage (this=0xbfbf669c) at image/qpixmap.cpp:486
#10 0x010b0a98 in KIconEffect::apply(QPixmap const&, int, float, QColor const&, QColor const&, bool) const () from /usr/lib/libkdeui.so.5
#11 0x010b0ca1 in KIconEffect::apply(QPixmap const&, int, float, QColor const&, bool) const () from /usr/lib/libkdeui.so.5
#12 0x003961a9 in KRatingPainter::paint(QPainter*, QRect const&, int, int) const () from /usr/lib/libnepomuk.so.4
#13 0x0038a516 in KRatingWidget::paintEvent(QPaintEvent*) () from /usr/lib/libnepomuk.so.4
#14 0x052ed275 in QWidget::event (this=0x9be1c20, event=0xbfbf6c84) at kernel/qwidget.cpp:8120
#15 0x056e6433 in QFrame::event (this=0x9be1c20, e=0xbfbf6c84) at widgets/qframe.cpp:557
#16 0x0529019c in QApplicationPrivate::notify_helper (this=0x9bdd868, receiver=0x9be1c20, e=0xbfbf6c84) at kernel/qapplication.cpp:4242
#17 0x05296eb7 in QApplication::notify (this=0xbfbf9934, receiver=0x9be1c20, e=0xbfbf6c84) at kernel/qapplication.cpp:4207
#18 0x010f4a1a in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#19 0x04213eab in QCoreApplication::notifyInternal (this=0xbfbf9934, receiver=0x9be1c20, event=0xbfbf6c84) at kernel/qcoreapplication.cpp:704
#20 0x052f6446 in QCoreApplication::sendSpontaneousEvent (this=0x9f23b40, pdev=0x9e7e734, rgn=..., offset=..., flags=<value optimized out>, sharedPainter=0x0, backingStore=0x9e7ef08)
    at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:218
#21 QWidgetPrivate::drawWidget (this=0x9f23b40, pdev=0x9e7e734, rgn=..., offset=..., flags=<value optimized out>, sharedPainter=0x0, backingStore=0x9e7ef08) at kernel/qwidget.cpp:5322
#22 0x052f7285 in QWidgetPrivate::paintSiblingsRecursive (this=0x9bde5a0, pdev=0x9e7e734, siblings=..., index=7, rgn=..., offset=..., flags=4, sharedPainter=0x0, backingStore=0x9e7ef08)
    at kernel/qwidget.cpp:5435
#23 0x052f70be in QWidgetPrivate::paintSiblingsRecursive (this=0x9bde5a0, pdev=0x9e7e734, siblings=..., index=8, rgn=..., offset=..., flags=4, sharedPainter=0x0, backingStore=0x9e7ef08)
    at kernel/qwidget.cpp:5422
#24 0x052f70be in QWidgetPrivate::paintSiblingsRecursive (this=0x9bde5a0, pdev=0x9e7e734, siblings=..., index=9, rgn=..., offset=..., flags=4, sharedPainter=0x0, backingStore=0x9e7ef08)
    at kernel/qwidget.cpp:5422
#25 0x052f70be in QWidgetPrivate::paintSiblingsRecursive (this=0x9bde5a0, pdev=0x9e7e734, siblings=..., index=10, rgn=..., offset=..., flags=4, sharedPainter=0x0, backingStore=0x9e7ef08)
    at kernel/qwidget.cpp:5422
#26 0x052f70be in QWidgetPrivate::paintSiblingsRecursive (this=0x9bde5a0, pdev=0x9e7e734, siblings=..., index=13, rgn=..., offset=..., flags=4, sharedPainter=0x0, backingStore=0x9e7ef08)
    at kernel/qwidget.cpp:5422
#27 0x052f70be in QWidgetPrivate::paintSiblingsRecursive (this=0x9bde5a0, pdev=0x9e7e734, siblings=..., index=14, rgn=..., offset=..., flags=4, sharedPainter=0x0, backingStore=0x9e7ef08)
    at kernel/qwidget.cpp:5422
#28 0x052f70be in QWidgetPrivate::paintSiblingsRecursive (this=0x9bde5a0, pdev=0x9e7e734, siblings=..., index=15, rgn=..., offset=..., flags=4, sharedPainter=0x0, backingStore=0x9e7ef08)
    at kernel/qwidget.cpp:5422
#29 0x052f70be in QWidgetPrivate::paintSiblingsRecursive (this=0x9bde5a0, pdev=0x9e7e734, siblings=..., index=16, rgn=..., offset=..., flags=4, sharedPainter=0x0, backingStore=0x9e7ef08)
    at kernel/qwidget.cpp:5422
#30 0x052f6195 in QWidgetPrivate::drawWidget (this=0x9bde5a0, pdev=0x9e7e734, rgn=..., offset=..., flags=<value optimized out>, sharedPainter=0x0, backingStore=0x9e7ef08) at kernel/qwidget.cpp:5371
#31 0x052f7285 in QWidgetPrivate::paintSiblingsRecursive (this=0x9f323a0, pdev=0x9e7e734, siblings=..., index=2, rgn=..., offset=..., flags=4, sharedPainter=0x0, backingStore=0x9e7ef08)
    at kernel/qwidget.cpp:5435
#32 0x052f6195 in QWidgetPrivate::drawWidget (this=0x9f323a0, pdev=0x9e7e734, rgn=..., offset=..., flags=<value optimized out>, sharedPainter=0x0, backingStore=0x9e7ef08) at kernel/qwidget.cpp:5371
#33 0x052f7285 in QWidgetPrivate::paintSiblingsRecursive (this=0x9f32f18, pdev=0x9e7e734, siblings=..., index=0, rgn=..., offset=..., flags=4, sharedPainter=0x0, backingStore=0x9e7ef08)
    at kernel/qwidget.cpp:5435
#34 0x052f6195 in QWidgetPrivate::drawWidget (this=0x9f32f18, pdev=0x9e7e734, rgn=..., offset=..., flags=<value optimized out>, sharedPainter=0x0, backingStore=0x9e7ef08) at kernel/qwidget.cpp:5371
#35 0x052f7285 in QWidgetPrivate::paintSiblingsRecursive (this=0x9f32d60, pdev=0x9e7e734, siblings=..., index=2, rgn=..., offset=..., flags=4, sharedPainter=0x0, backingStore=0x9e7ef08)
    at kernel/qwidget.cpp:5435
#36 0x052f6195 in QWidgetPrivate::drawWidget (this=0x9f32d60, pdev=0x9e7e734, rgn=..., offset=..., flags=<value optimized out>, sharedPainter=0x0, backingStore=0x9e7ef08) at kernel/qwidget.cpp:5371
#37 0x052f7285 in QWidgetPrivate::paintSiblingsRecursive (this=0x9e9c138, pdev=0x9e7e734, siblings=..., index=9, rgn=..., offset=..., flags=4, sharedPainter=0x0, backingStore=0x9e7ef08)
    at kernel/qwidget.cpp:5435
#38 0x052f70be in QWidgetPrivate::paintSiblingsRecursive (this=0x9e9c138, pdev=0x9e7e734, siblings=..., index=10, rgn=..., offset=..., flags=4, sharedPainter=0x0, backingStore=0x9e7ef08)
    at kernel/qwidget.cpp:5422
#39 0x052f6195 in QWidgetPrivate::drawWidget (this=0x9e9c138, pdev=0x9e7e734, rgn=..., offset=..., flags=<value optimized out>, sharedPainter=0x0, backingStore=0x9e7ef08) at kernel/qwidget.cpp:5371
#40 0x052f7285 in QWidgetPrivate::paintSiblingsRecursive (this=0x9e98028, pdev=0x9e7e734, siblings=..., index=5, rgn=..., offset=..., flags=4, sharedPainter=0x0, backingStore=0x9e7ef08)
    at kernel/qwidget.cpp:5435
#41 0x052f6195 in QWidgetPrivate::drawWidget (this=0x9e98028, pdev=0x9e7e734, rgn=..., offset=..., flags=<value optimized out>, sharedPainter=0x0, backingStore=0x9e7ef08) at kernel/qwidget.cpp:5371
#42 0x052f7285 in QWidgetPrivate::paintSiblingsRecursive (this=0x9cc9280, pdev=0x9e7e734, siblings=..., index=39, rgn=..., offset=..., flags=4, sharedPainter=0x0, backingStore=0x9e7ef08)
    at kernel/qwidget.cpp:5435
#43 0x052f6195 in QWidgetPrivate::drawWidget (this=0x9cc9280, pdev=0x9e7e734, rgn=..., offset=..., flags=<value optimized out>, sharedPainter=0x0, backingStore=0x9e7ef08) at kernel/qwidget.cpp:5371
#44 0x054c9930 in QWidgetBackingStore::sync (this=0x9e7ef08) at painting/qbackingstore.cpp:1289
#45 0x052e6cc3 in QWidgetPrivate::syncBackingStore (this=0x9cc9280) at kernel/qwidget.cpp:1662
#46 0x052edbac in QWidget::event (this=0x9c4e2a8, event=0xa161610) at kernel/qwidget.cpp:8266
#47 0x05704737 in QMainWindow::event (this=0x9c4e2a8, event=0xa161610) at widgets/qmainwindow.cpp:1434
#48 0x011e6484 in KMainWindow::event(QEvent*) () from /usr/lib/libkdeui.so.5
#49 0x0122e3df in KXmlGuiWindow::event(QEvent*) () from /usr/lib/libkdeui.so.5
#50 0x0529019c in QApplicationPrivate::notify_helper (this=0x9bdd868, receiver=0x9c4e2a8, e=0xa161610) at kernel/qapplication.cpp:4242
#51 0x05296eb7 in QApplication::notify (this=0xbfbf9934, receiver=0x9c4e2a8, e=0xa161610) at kernel/qapplication.cpp:4207
#52 0x010f4a1a in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#53 0x04213eab in QCoreApplication::notifyInternal (this=0xbfbf9934, receiver=0x9c4e2a8, event=0xa161610) at kernel/qcoreapplication.cpp:704
#54 0x042168e3 in QCoreApplication::sendEvent (receiver=0x0, event_type=0, data=0x9bbf340) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#55 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x9bbf340) at kernel/qcoreapplication.cpp:1345
#56 0x04216a4d in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at kernel/qcoreapplication.cpp:1238
#57 0x042400df in QCoreApplication::sendPostedEvents (s=0x9be6590) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:220
#58 postEventSourceDispatch (s=0x9be6590) at kernel/qeventdispatcher_glib.cpp:276
#59 0x02300e88 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#60 0x02304730 in ?? () from /lib/libglib-2.0.so.0
#61 0x02304863 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#62 0x0423fbd5 in QEventDispatcherGlib::processEvents (this=0x9bbf518, flags=...) at kernel/qeventdispatcher_glib.cpp:407
#63 0x0534db75 in QGuiEventDispatcherGlib::processEvents (this=0x9bbf518, flags=...) at kernel/qguieventdispatcher_glib.cpp:202
#64 0x042124c9 in QEventLoop::processEvents (this=0xbfbf9894, flags=) at kernel/qeventloop.cpp:149
#65 0x0421291a in QEventLoop::exec (this=0xbfbf9894, flags=...) at kernel/qeventloop.cpp:201
#66 0x04216b0f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:981
#67 0x05290237 in QApplication::exec () at kernel/qapplication.cpp:3570
#68 0x0807b3df in _start ()

Reported using DrKonqi