Application that crashed: dolphin
Version of the application: 1.3
KDE Version: 4.3.1 (KDE 4.3.1)
Qt Version: 4.5.2
Operating System: Linux 2.6.28-15-generic i686
Distribution: Ubuntu 9.04

What I was doing when the application crashed:
I viewed two tabs in Dolphin, one of whom contained USB flash drive. I clicked unmount flash drive, it was unmounted but after that, Dolphin crashed with segfault.

 -- Backtrace:
Application: Dolphin (dolphin), signal: Segmentation fault
[KCrash Handler]
#6  0xb670c719 in QUrl (this=0xbf8c2714, other=@0x8) at io/qurl.cpp:3936
#7  0xb732f189 in KUrl (this=0xbf8c2714, _u=@0x8) at /build/buildd/kde4libs-4.3.1/kdecore/io/kurl.cpp:468
#8  0xb7e1d7ae in KFileItem::url (this=0x8ec2b28) at /build/buildd/kde4libs-4.3.1/kio/kio/kfileitem.cpp:1271
#9  0xb7e0c87f in KDirModel::indexForItem (this=0x96ee528, item=@0x8ec2b28) at /build/buildd/kde4libs-4.3.1/kio/kio/kdirmodel.cpp:919
#10 0xb7ceff82 in KFilePreviewGenerator::Private::orderItems (this=0x96f4110, items=@0xbf8c2818) at /build/buildd/kde4libs-4.3.1/kfile/kfilepreviewgenerator.cpp:1015
#11 0xb7cf3be3 in KFilePreviewGenerator::Private::updateIcons (this=0x96f4110, items=@0xbf8c2868) at /build/buildd/kde4libs-4.3.1/kfile/kfilepreviewgenerator.cpp:508
#12 0xb7cf3e58 in KFilePreviewGenerator::Private::delayedIconUpdate (this=0x96f4110) at /build/buildd/kde4libs-4.3.1/kfile/kfilepreviewgenerator.cpp:1080
#13 0xb7cf4efe in KFilePreviewGenerator::qt_metacall (this=0x96f3fa8, _c=QMetaObject::InvokeMetaMethod, _id=10, _a=0xbf8c2918)
    at /build/buildd/kde4libs-4.3.1/obj-i486-linux-gnu/kfile/kfilepreviewgenerator.moc:95
#14 0xb676e1b8 in QMetaObject::activate (sender=0x96f4538, from_signal_index=4, to_signal_index=4, argv=0x0) at kernel/qobject.cpp:3113
#15 0xb676ee42 in QMetaObject::activate (sender=0x96f4538, m=0xb684b904, local_signal_index=0, argv=0x0) at kernel/qobject.cpp:3187
#16 0xb67aa687 in QTimer::timeout (this=0x96f4538) at .moc/release-shared/moc_qtimer.cpp:128
#17 0xb67745ce in QTimer::timerEvent (this=0x96f4538, e=0xbf8c2d9c) at kernel/qtimer.cpp:261
#18 0xb676916f in QObject::event (this=0x96f4538, e=0xbf8c2d9c) at kernel/qobject.cpp:1075
#19 0xb696fd3c in QApplicationPrivate::notify_helper (this=0x8ac2600, receiver=0x96f4538, e=0xbf8c2d9c) at kernel/qapplication.cpp:4056
#20 0xb697803e in QApplication::notify (this=0xbf8c3034, receiver=0x96f4538, e=0xbf8c2d9c) at kernel/qapplication.cpp:3603
#21 0xb76b685d in KApplication::notify (this=0xbf8c3034, receiver=0x96f4538, event=0xbf8c2d9c) at /build/buildd/kde4libs-4.3.1/kdeui/kernel/kapplication.cpp:302
#22 0xb6758bcb in QCoreApplication::notifyInternal (this=0xbf8c3034, receiver=0x96f4538, event=0xbf8c2d9c) at kernel/qcoreapplication.cpp:610
#23 0xb6787d51 in QTimerInfoList::activateTimers (this=0x8ac4bac) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#24 0xb67843a0 in timerSourceDispatch (source=0x8ac4b78) at kernel/qeventdispatcher_glib.cpp:165
#25 0xb5ed4b88 in IA__g_main_context_dispatch (context=0x8ac4490) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:1814
#26 0xb5ed80eb in g_main_context_iterate (context=0x8ac4490, block=1, dispatch=1, self=0x8ac27a0) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:2448
#27 0xb5ed8268 in IA__g_main_context_iteration (context=0x8ac4490, may_block=1) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:2511
#28 0xb67842f8 in QEventDispatcherGlib::processEvents (this=0x8a9bd10, flags={i = -1081331944}) at kernel/qeventdispatcher_glib.cpp:327
#29 0xb6a11a75 in QGuiEventDispatcherGlib::processEvents (this=0x8a9bd10, flags={i = -1081331896}) at kernel/qguieventdispatcher_glib.cpp:202
#30 0xb67571fa in QEventLoop::processEvents (this=0xbf8c2fc0, flags={i = -1081331832}) at kernel/qeventloop.cpp:149
#31 0xb6757642 in QEventLoop::exec (this=0xbf8c2fc0, flags={i = -1081331768}) at kernel/qeventloop.cpp:201
#32 0xb6759ae9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#33 0xb696fbb7 in QApplication::exec () at kernel/qapplication.cpp:3525
#34 0x0807aaff in main (argc=6, argv=0xbf8c31e4) at /build/buildd/kdebase-4.3.1/apps/dolphin/src/main.cpp:94

Reported using DrKonqi