Application: dolphin (1.4)
KDE Platform Version: 4.4.2 (KDE 4.4.2)
Qt Version: 4.6.2
Operating System: Linux 2.6.32.10-90.fc12.i686.PAE i686
Distribution (Platform): Fedora RPMs

-- Information about the crash:
Yes, It is.
I tried to reproduce this bug (https://bugs.kde.org/show_bug.cgi?id=233622), I had no luck, but... when I clicked close button It crashed :)

 -- Backtrace:
Application: Dolphin (dolphin), signal: Aborted
[Current thread is 1 (Thread 0xb77e7ad0 (LWP 4163))]

Thread 2 (Thread 0xade1ab70 (LWP 4174)):
#0  0x006bd424 in __kernel_vsyscall ()
#1  0x00267f72 in pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_timedwait.S:179
#2  0x07fb66b5 in metronom_sync_loop (this=<value optimized out>) at metronom.c:870
#3  0x00263ab5 in start_thread (arg=<value optimized out>) at pthread_create.c:297
#4  0x005eedce in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 1 (Thread 0xb77e7ad0 (LWP 4163)):
[KCrash Handler]
#6  0x006bd424 in __kernel_vsyscall ()
#7  0x0053ea91 in raise (sig=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
#8  0x0054035a in abort () at abort.c:92
#9  0x0694b7ec in qt_message_output (msgType=QtFatalMsg, buf=0x94e2460 "ASSERT: \"s_instance == 0\" in file /builddir/build/BUILD/phonon-4.3.80/xine/backend.cpp, line 79") at global/qglobal.cpp:2250
#10 0x0694b9cc in qt_message (msgType=QtFatalMsg, msg=0x6aa6c3c "ASSERT: \"%s\" in file %s, line %d", ap=0xbf9e70a4 "\211c\203\006<f\203\006O") at global/qglobal.cpp:2296
#11 0x0694baea in qFatal (msg=0x6aa6c3c "ASSERT: \"%s\" in file %s, line %d") at global/qglobal.cpp:2479
#12 0x0694bb76 in qt_assert (assertion=0x6836389 "s_instance == 0", file=0x683663c "/builddir/build/BUILD/phonon-4.3.80/xine/backend.cpp", line=79) at global/qglobal.cpp:2013
#13 0x06816337 in Phonon::Xine::Backend::Backend (this=<value optimized out>, parent=<value optimized out>) at /usr/src/debug/phonon-4.3.80/xine/backend.cpp:79
#14 0x06816ae1 in qt_plugin_instance () at /usr/src/debug/phonon-4.3.80/xine/backend.cpp:54
#15 0x06a2f394 in QPluginLoader::instance (this=0xbf9e7314) at plugin/qpluginloader.cpp:204
#16 0x080e6cd3 in ?? () from /usr/lib/kde4/plugins/phonon_platform/kde.so
#17 0x080e7411 in ?? () from /usr/lib/kde4/plugins/phonon_platform/kde.so
#18 0x06879a54 in Phonon::FactoryPrivate::createBackend (this=<value optimized out>) at /usr/src/debug/phonon-4.3.80/phonon/factory.cpp:118
#19 0x0687a8f3 in Phonon::Factory::backend (createWhenNull=<value optimized out>) at /usr/src/debug/phonon-4.3.80/phonon/factory.cpp:417
#20 0x06872828 in Phonon::BackendCapabilities::isMimeTypeAvailable (mimeType=<value optimized out>) at /usr/src/debug/phonon-4.3.80/phonon/backendcapabilities.cpp:66
#21 0x0807bbe5 in InformationPanelContent::showItem (this=0x921d948, item=...) at /usr/src/debug/kdebase-4.4.2/apps/dolphin/src/panels/information/informationpanelcontent.cpp:203
#22 0x080798cb in InformationPanel::showItemInfo (this=0x9381b90) at /usr/src/debug/kdebase-4.4.2/apps/dolphin/src/panels/information/informationpanel.cpp:179
#23 0x0807a7bb in InformationPanel::qt_metacall (this=0x9381b90, _c=InvokeMetaMethod, _id=<value optimized out>, _a=0xbf9e780c)
    at /usr/src/debug/kdebase-4.4.2/i686-redhat-linux-gnu/apps/dolphin/src/informationpanel.moc:102
#24 0x06a4d5db in QMetaObject::metacall (object=0x9381b90, cl=InvokeMetaMethod, idx=33, argv=0xbf9e780c) at kernel/qmetaobject.cpp:237
#25 0x06a5c4af in QMetaObject::activate (sender=0x92f3e90, m=0x6b5c704, local_signal_index=0, argv=0x0) at kernel/qobject.cpp:3293
#26 0x06aa4298 in QTimer::timeout (this=0x92f3e90) at .moc/release-shared/moc_qtimer.cpp:134
#27 0x06a6237e in QTimer::timerEvent (this=0x92f3e90, e=0xbf9e7d40) at kernel/qtimer.cpp:271
#28 0x06a58a94 in QObject::event (this=0x92f3e90, e=0xbf9e7d40) at kernel/qobject.cpp:1212
#29 0x07028d2c in QApplicationPrivate::notify_helper (this=0x90f6a70, receiver=0x92f3e90, e=0xbf9e7d40) at kernel/qapplication.cpp:4300
#30 0x0702f556 in QApplication::notify (this=0xbf9e80a4, receiver=0x92f3e90, e=0xbf9e7d40) at kernel/qapplication.cpp:3704
#31 0x00f557cb in KApplication::notify (this=0xbf9e80a4, receiver=0x92f3e90, event=0xbf9e7d40) at /usr/src/debug/kdelibs-4.4.2/kdeui/kernel/kapplication.cpp:302
#32 0x06a48c03 in QCoreApplication::notifyInternal (this=0xbf9e80a4, receiver=0x92f3e90, event=0xbf9e7d40) at kernel/qcoreapplication.cpp:704
#33 0x06a73afe in sendEvent (this=0x90fb93c) at kernel/qcoreapplication.h:215
#34 QTimerInfoList::activateTimers (this=0x90fb93c) at kernel/qeventdispatcher_unix.cpp:603
#35 0x06a71145 in timerSourceDispatch (source=0x90fb908) at kernel/qeventdispatcher_glib.cpp:184
#36 0x02ba7fb8 in g_main_dispatch (context=0x90fb2f0) at gmain.c:1960
#37 IA__g_main_context_dispatch (context=0x90fb2f0) at gmain.c:2513
#38 0x02bab8e8 in g_main_context_iterate (context=0x266eb0, block=1, dispatch=1, self=0x90f72c8) at gmain.c:2591
#39 0x02baba14 in IA__g_main_context_iteration (context=0x90fb2f0, may_block=1) at gmain.c:2654
#40 0x06a70e46 in QEventDispatcherGlib::processEvents (this=0x90d5340, flags=...) at kernel/qeventdispatcher_glib.cpp:412
#41 0x070d70e6 in QGuiEventDispatcherGlib::processEvents (this=0x90d5340, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#42 0x06a472da in QEventLoop::processEvents (this=0xbf9e8004, flags=...) at kernel/qeventloop.cpp:149
#43 0x06a4761a in QEventLoop::exec (this=0xbf9e8004, flags=...) at kernel/qeventloop.cpp:201
#44 0x06a49ce7 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:981
#45 0x07028dd8 in QApplication::exec () at kernel/qapplication.cpp:3579
#46 0x08078487 in main (argc=5, argv=0xbf9e8284) at /usr/src/debug/kdebase-4.4.2/apps/dolphin/src/main.cpp:101

This bug may be a duplicate of or related to bug 233142.

Possible duplicates by query: bug 233142, bug 231636, bug 229872, bug 226243.

Reported using DrKonqi