Application: kdenlive (0.9.2)
KDE Platform Version: 4.8.4 (4.8.4)
Qt Version: 4.8.2
Operating System: Linux 3.2.0-3-686-pae i686
Distribution: Debian GNU/Linux testing (wheezy)

-- Information about the crash:
<In detail, tell us what you were doing  when the application crashed.>

The crash can be reproduced some of the time.

-- Backtrace:
Application: Kdenlive (kdenlive), signal: Segmentation fault
Using host libthread_db library "/lib/i386-linux-gnu/i686/cmov/libthread_db.so.1".
[KCrash Handler]
#7  0xb4cbac91 in free () from /lib/i386-linux-gnu/i686/cmov/libc.so.6
#8  0xb5779c4b in pool_close (self=0xb9869f68) at mlt_pool.c:213
#9  0xb5767119 in mlt_property_clear (self=0xb9869f90) at mlt_property.c:117
#10 mlt_property_close (self=0xb9869f90) at mlt_property.c:719
#11 0xb5767a9c in mlt_properties_close (self=0xb9864b10) at mlt_properties.c:1327
#12 mlt_properties_close (self=0xb9864b10) at mlt_properties.c:1298
#13 0xb577a00d in mlt_pool_close () at mlt_pool.c:392
#14 0xb5778522 in mlt_factory_close () at mlt_factory.c:425
#15 0xb574a8cd in Mlt::Factory::close() () from /usr/lib/libmlt++.so.3
#16 0xb73c3126 in MainWindow::~MainWindow (this=this@entry=0xb9868348, __in_chrg=<optimized out>, __vtt_parm=<optimized out>) at /build/buildd-kdenlive_0.9.2-2-i386-Vn4PnB/kdenlive-0.9.2/src/mainwindow.cpp:667
#17 0xb73c3232 in MainWindow::~MainWindow (this=0xb9868348, __in_chrg=<optimized out>, __vtt_parm=<optimized out>) at /build/buildd-kdenlive_0.9.2-2-i386-Vn4PnB/kdenlive-0.9.2/src/mainwindow.cpp:668
#18 0xb5918563 in qDeleteInEventHandler (o=o@entry=0xb9868348) at kernel/qobject.cpp:4277
#19 0xb591acf0 in QObject::event (this=0xb9868348, e=0xbb8f3370) at kernel/qobject.cpp:1176
#20 0xb5cd44da in QWidget::event (this=0xb9868348, event=0xbb8f3370) at kernel/qwidget.cpp:8830
#21 0xb6102f1c in QMainWindow::event (this=0xb9868348, event=0xbb8f3370) at widgets/qmainwindow.cpp:1478
#22 0xb710aaf4 in KMainWindow::event (this=0xb9868348, ev=0xbb8f3370) at ../../kdeui/widgets/kmainwindow.cpp:1084
#23 0xb7151af2 in KXmlGuiWindow::event (this=0xb9868348, ev=0xbb8f3370) at ../../kdeui/xmlgui/kxmlguiwindow.cpp:126
#24 0xb5c7b47c in QApplicationPrivate::notify_helper (this=0xb9729d88, receiver=0xb9868348, e=0xbb8f3370) at kernel/qapplication.cpp:4556
#25 0xb5c7ff24 in QApplication::notify (this=0xb9729d88, receiver=0xb9868348, e=0xbb8f3370) at kernel/qapplication.cpp:4417
#26 0xb7035581 in KApplication::notify (this=0xbfac10c4, receiver=0xb9868348, event=0xbb8f3370) at ../../kdeui/kernel/kapplication.cpp:311
#27 0xb590455e in QCoreApplication::notifyInternal (this=0xbfac10c4, receiver=0xb9868348, event=0xbb8f3370) at kernel/qcoreapplication.cpp:915
#28 0xb590876d in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#29 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0xb9708130) at kernel/qcoreapplication.cpp:1539
#30 0xb59089ec in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at kernel/qcoreapplication.cpp:1432
#31 0xb59366c4 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#32 postEventSourceDispatch (s=0xb9729d38) at kernel/qeventdispatcher_glib.cpp:279
#33 0xb4834633 in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#34 0xb48349d0 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#35 0xb4834ab1 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#36 0xb5936841 in QEventDispatcherGlib::processEvents (this=0xb9708e88, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#37 0xb5d2e1fa in QGuiEventDispatcherGlib::processEvents (this=0xb9708e88, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#38 0xb590302c in QEventLoop::processEvents (this=this@entry=0xbfac0fd8, flags=...) at kernel/qeventloop.cpp:149
#39 0xb5903321 in QEventLoop::exec (this=0xbfac0fd8, flags=...) at kernel/qeventloop.cpp:204
#40 0xb5908a9a in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1187
#41 0xb5c792f4 in QApplication::exec () at kernel/qapplication.cpp:3817
#42 0xb7325382 in main (argc=5, argv=0xbfac11a4) at /build/buildd-kdenlive_0.9.2-2-i386-Vn4PnB/kdenlive-0.9.2/src/main.cpp:89

Report to http://kdenlive.org/mantis