Application: kdenlive (0.7.8)
KDE Platform Version: 4.5.1 (KDE 4.5.1)
Qt Version: 4.7.0
Operating System: Linux 2.6.35-22-generic i686
Distribution: Ubuntu 10.10

-- 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
[Current thread is 1 (Thread 0xb774e710 (LWP 4853))]

Thread 4 (Thread 0xb31b9b70 (LWP 4886)):
#0  0x005a4416 in __kernel_vsyscall ()
#1  0x0876dde6 in poll () from /lib/libc.so.6
#2  0x0146fa1b in g_poll () from /lib/libglib-2.0.so.0
#3  0x0146243c in ?? () from /lib/libglib-2.0.so.0
#4  0x01462848 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#5  0x0114759f in QEventDispatcherGlib::processEvents (this=0x977f448, flags=...) at kernel/qeventdispatcher_glib.cpp:417
#6  0x01117609 in QEventLoop::processEvents (this=0xb31b9290, flags=) at kernel/qeventloop.cpp:149
#7  0x01117a8a in QEventLoop::exec (this=0xb31b9290, flags=...) at kernel/qeventloop.cpp:201
#8  0x01013b7e in QThread::exec (this=0x924bcd0) at thread/qthread.cpp:490
#9  0x010f635b in QInotifyFileSystemWatcherEngine::run (this=0x924bcd0) at io/qfilesystemwatcher_inotify.cpp:248
#10 0x01016df9 in QThreadPrivate::start (arg=0x924bcd0) at thread/qthread_unix.cpp:266
#11 0x004e8cc9 in start_thread () from /lib/libpthread.so.0
#12 0x0877c6ae in clone () from /lib/libc.so.6

Thread 3 (Thread 0xa3915b70 (LWP 5466)):
#0  0x005a4416 in __kernel_vsyscall ()
#1  0x0876dde6 in poll () from /lib/libc.so.6
#2  0x0267ad90 in ?? () from /usr/lib/libxcb.so.1
#3  0x0267cca2 in xcb_wait_for_reply () from /usr/lib/libxcb.so.1
#4  0x0128f016 in _XReply () from /usr/lib/libX11.so.6
#5  0x0127c3c2 in XQueryExtension () from /usr/lib/libX11.so.6
#6  0x012709bb in XInitExtension () from /usr/lib/libX11.so.6
#7  0x004bcc5c in XextAddDisplay () from /usr/lib/libXext.so.6
#8  0x004bc476 in ?? () from /usr/lib/libXext.so.6
#9  0x004bc8e4 in ?? () from /usr/lib/libXext.so.6
#10 0x004bce87 in XextAddDisplay () from /usr/lib/libXext.so.6
#11 0x004b7b06 in ?? () from /usr/lib/libXext.so.6
#12 0x004b8571 in XShmPutImage () from /usr/lib/libXext.so.6
#13 0x02007844 in ?? () from /usr/lib/libSDL-1.2.so.0
#14 0x0200bf80 in ?? () from /usr/lib/libSDL-1.2.so.0
#15 0x01ffdf0e in SDL_UpdateRects () from /usr/lib/libSDL-1.2.so.0
#16 0x01ffe054 in SDL_UpdateRect () from /usr/lib/libSDL-1.2.so.0
#17 0x01ffe552 in SDL_Flip () from /usr/lib/libSDL-1.2.so.0
#18 0x01c1f041 in ?? () from /usr/lib/mlt/libmltsdl.so
Backtrace stopped: previous frame inner to this frame (corrupt stack?)

Thread 2 (Thread 0xaf1cab70 (LWP 5467)):
#0  0x005a4416 in __kernel_vsyscall ()
#1  0x004ed884 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#2  0x00d24491 in mlt_consumer_put_frame () from /usr/lib/libmlt.so.2
#3  0x0975e5b8 in ?? ()
Backtrace stopped: previous frame inner to this frame (corrupt stack?)

Thread 1 (Thread 0xb774e710 (LWP 4853)):
[KCrash Handler]
#7  0x00a77f13 in KXErrorHandler::handle(_XDisplay*, XErrorEvent*) () from /usr/lib/libkdeui.so.5
#8  0x00a78015 in KXErrorHandler::handler_wrapper(_XDisplay*, XErrorEvent*) () from /usr/lib/libkdeui.so.5
#9  0x012882c9 in _XError () from /usr/lib/libX11.so.6
#10 0x0128e99f in ?? () from /usr/lib/libX11.so.6
#11 0x0128f406 in _XEventsQueued () from /usr/lib/libX11.so.6
#12 0x01277b0b in XEventsQueued () from /usr/lib/libX11.so.6
#13 0x04b83e3e in x11EventSourcePrepare (s=0x91fd690, timeout=0xbff20c6c) at kernel/qguieventdispatcher_glib.cpp:79
#14 0x01461e6a in g_main_context_prepare () from /lib/libglib-2.0.so.0
#15 0x01462279 in ?? () from /lib/libglib-2.0.so.0
#16 0x01462848 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#17 0x01147565 in QEventDispatcherGlib::processEvents (this=0x91d0688, flags=...) at kernel/qeventdispatcher_glib.cpp:415
#18 0x04b83be5 in QGuiEventDispatcherGlib::processEvents (this=0x91d0688, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#19 0x01117609 in QEventLoop::processEvents (this=0xbff20e84, flags=) at kernel/qeventloop.cpp:149
#20 0x01117a8a in QEventLoop::exec (this=0xbff20e84, flags=...) at kernel/qeventloop.cpp:201
#21 0x0111c00f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1009
#22 0x04ac0e07 in QApplication::exec () at kernel/qapplication.cpp:3672
#23 0x0808067d in main (argc=5, argv=0xbff21134) at /build/buildd/kdenlive-0.7.7.1+svn4571/src/main.cpp:87

Report to http://kdenlive.org/mantis