Application that crashed: dolphin
Version of the application: 1.3
KDE Version: 4.3.00 (KDE 4.3.0)
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 was extracting 5 files (using a tripplecore amd 2.6 ghz), wanted to change folders by using the quicknavigation on the upper left. dolphin crashed.

 -- Backtrace:
Application: Dolphin (dolphin), signal: Segmentation fault
[Current thread is 0 (LWP 3557)]

Thread 2 (Thread 0xaf79ab90 (LWP 5554)):
#0  0xb80a4430 in __kernel_vsyscall ()
#1  0xb61e8412 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb658d344 in pthread_cond_timedwait () from /lib/tls/i686/cmov/libc.so.6
#3  0xae868ae3 in ?? () from /usr/lib/libxine.so.1

Thread 1 (Thread 0xb5d60700 (LWP 3557)):
[KCrash Handler]
#6  0xb6819719 in QUrl::QUrl () from /usr/lib/libQtCore.so.4
#7  0xb743bd89 in KUrl::KUrl () from /usr/lib/libkdecore.so.5
#8  0xb7f26aee in KFileItem::url () from /usr/lib/libkio.so.5
#9  0xb7f15bbf in KDirModel::indexForItem () from /usr/lib/libkio.so.5
#10 0xb7df9f62 in KFilePreviewGenerator::Private::orderItems () from /usr/lib/libkfile.so.4
#11 0xb7dfdbc3 in KFilePreviewGenerator::Private::updateIcons () from /usr/lib/libkfile.so.4
#12 0xb7dfde38 in KFilePreviewGenerator::Private::delayedIconUpdate () from /usr/lib/libkfile.so.4
#13 0xb7dfeede in KFilePreviewGenerator::qt_metacall () from /usr/lib/libkfile.so.4
#14 0xb687b1b8 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#15 0xb687be42 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#16 0xb68b7687 in QTimer::timeout () from /usr/lib/libQtCore.so.4
#17 0xb68815ce in QTimer::timerEvent () from /usr/lib/libQtCore.so.4
#18 0xb687616f in QObject::event () from /usr/lib/libQtCore.so.4
#19 0xb6a7cd3c in QApplicationPrivate::notify_helper () from /usr/lib/libQtGui.so.4
#20 0xb6a8503e in QApplication::notify () from /usr/lib/libQtGui.so.4
#21 0xb77c15cd in KApplication::notify () from /usr/lib/libkdeui.so.5
#22 0xb6865bcb in QCoreApplication::notifyInternal () from /usr/lib/libQtCore.so.4
#23 0xb6894d51 in ?? () from /usr/lib/libQtCore.so.4
#24 0xb68913a0 in ?? () from /usr/lib/libQtCore.so.4
#25 0xb5fe2b88 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#26 0xb5fe60eb in ?? () from /usr/lib/libglib-2.0.so.0
#27 0xb5fe6268 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#28 0xb68912f8 in QEventDispatcherGlib::processEvents () from /usr/lib/libQtCore.so.4
#29 0xb6b1ea75 in ?? () from /usr/lib/libQtGui.so.4
#30 0xb68641fa in QEventLoop::processEvents () from /usr/lib/libQtCore.so.4
#31 0xb6864642 in QEventLoop::exec () from /usr/lib/libQtCore.so.4
#32 0xb6866ae9 in QCoreApplication::exec () from /usr/lib/libQtCore.so.4
#33 0xb6a7cbb7 in QApplication::exec () from /usr/lib/libQtGui.so.4
#34 0x0807aa4f in _start ()

Reported using DrKonqi