Application that crashed: dolphin
Version of the application: 1.2.80
KDE Version: 4.2.90 (KDE 4.2.90 (KDE 4.3 Beta2))
Qt Version: 4.5.1
Operating System: Linux 2.6.28-11-generic i686
Distribution: Ubuntu 9.04

What I was doing when the application crashed:
i was browsing some local files and then it crashed, this has happened several times before.

 -- Backtrace:
Application: Dolphin (dolphin), signal: Segmentation fault
[KCrash Handler]
#6  KFileItem::determineMimeType (this=0x8f2dae0) at /build/buildd/kde4libs-4.2.90/kdecore/util/ksharedptr.h:106
#7  0xb7e23e1f in KFileItem::mimetype (this=0x8f2dae0) at /build/buildd/kde4libs-4.2.90/kio/kio/kfileitem.cpp:683
#8  0xb7cfaa45 in KFilePreviewGenerator::Private::createPreviews (this=0x8d00400, items=@0xbf8c9718) at /build/buildd/kde4libs-4.2.90/kfile/kfilepreviewgenerator.cpp:943
#9  0xb7cfadf7 in KFilePreviewGenerator::Private::updateIcons (this=0x8d00400, items=@0xbf8c9768) at /build/buildd/kde4libs-4.2.90/kfile/kfilepreviewgenerator.cpp:508
#10 0xb7cfafb8 in KFilePreviewGenerator::Private::delayedIconUpdate (this=0x8d00400) at /build/buildd/kde4libs-4.2.90/kfile/kfilepreviewgenerator.cpp:1125
#11 0xb7cfbefe in KFilePreviewGenerator::qt_metacall (this=0x8d002b0, _c=QMetaObject::InvokeMetaMethod, _id=10, _a=0xbf8c9818)
    at /build/buildd/kde4libs-4.2.90/obj-i486-linux-gnu/kfile/kfilepreviewgenerator.moc:95
#12 0xb6750a58 in QMetaObject::activate (sender=0x8d0a648, from_signal_index=4, to_signal_index=4, argv=0x0) at kernel/qobject.cpp:3120
#13 0xb67516e2 in QMetaObject::activate (sender=0x8d0a648, m=0xb682d904, local_signal_index=0, argv=0x0) at kernel/qobject.cpp:3194
#14 0xb678c4d7 in QTimer::timeout (this=0x8d0a648) at .moc/release-shared/moc_qtimer.cpp:128
#15 0xb67564ae in QTimer::timerEvent (this=0x8d0a648, e=0xbf8c9c9c) at kernel/qtimer.cpp:261
#16 0xb674af0f in QObject::event (this=0x8d0a648, e=0xbf8c9c9c) at kernel/qobject.cpp:1082
#17 0xb6951bcc in QApplicationPrivate::notify_helper (this=0x8ad4248, receiver=0x8d0a648, e=0xbf8c9c9c) at kernel/qapplication.cpp:4057
#18 0xb6959ede in QApplication::notify (this=0xbf8c9f34, receiver=0x8d0a648, e=0xbf8c9c9c) at kernel/qapplication.cpp:3604
#19 0xb76bcc4d in KApplication::notify (this=0xbf8c9f34, receiver=0x8d0a648, event=0xbf8c9c9c) at /build/buildd/kde4libs-4.2.90/kdeui/kernel/kapplication.cpp:302
#20 0xb673a7ab in QCoreApplication::notifyInternal (this=0xbf8c9f34, receiver=0x8d0a648, event=0xbf8c9c9c) at kernel/qcoreapplication.cpp:610
#21 0xb6769b31 in QTimerInfoList::activateTimers (this=0x8ac9934) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#22 0xb6766280 in timerSourceDispatch (source=0x8ac9900) at kernel/qeventdispatcher_glib.cpp:164
#23 0xb5eb8b88 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#24 0xb5ebc0eb in ?? () from /usr/lib/libglib-2.0.so.0
#25 0xb5ebc268 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#26 0xb67661d8 in QEventDispatcherGlib::processEvents (this=0x8ac42f8, flags={i = -1081303528}) at kernel/qeventdispatcher_glib.cpp:324
#27 0xb69f3765 in QGuiEventDispatcherGlib::processEvents (this=0x8ac42f8, flags={i = -1081303480}) at kernel/qguieventdispatcher_glib.cpp:202
#28 0xb6738dda in QEventLoop::processEvents (this=0xbf8c9ec0, flags={i = -1081303416}) at kernel/qeventloop.cpp:149
#29 0xb673921a in QEventLoop::exec (this=0xbf8c9ec0, flags={i = -1081303352}) at kernel/qeventloop.cpp:200
#30 0xb673b6c9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#31 0xb6951a47 in QApplication::exec () at kernel/qapplication.cpp:3526
#32 0x0807a8af in _start ()

This bug may be a duplicate of or related to bug 197733

Reported using DrKonqi