Application: kwin (4.10.3)
KDE Platform Version: 4.10.3
Qt Version: 4.8.4
Operating System: Linux 3.8.0-25-generic x86_64
Distribution: Ubuntu 13.04

-- Information about the crash:
- What I was doing when the application crashed:
Kwin crash when press F11 for exit Firefox full screen mode. 
- Unusual behavior I noticed:
Screen flash.

-- Backtrace:
Application: KWin (kwin), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f01298377c0 (LWP 3473))]

Thread 3 (Thread 0x7f00fbfff700 (LWP 3487)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f0125a65e77 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007f0125a65ea9 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007f011cdf0f8e in start_thread (arg=0x7f00fbfff700) at pthread_create.c:311
#4  0x00007f0129175e1d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 2 (Thread 0x7f010da1a700 (LWP 5320)):
#0  0x00007f012916e233 in select () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f01246034f3 in qt_safe_select (nfds=15, fdread=0x7f0108046cb8, fdwrite=0x7f0108046f50, fdexcept=0x7f01080471e8, orig_timeout=0x0) at kernel/qcore_unix.cpp:83
#2  0x00007f0124608499 in QEventDispatcherUNIXPrivate::doSelect (this=this@entry=0x7f0108046b00, flags=..., timeout=0x0) at kernel/qeventdispatcher_unix.cpp:223
#3  0x00007f0124608c82 in QEventDispatcherUNIX::processEvents (this=0x7f01080008f0, flags=...) at kernel/qeventdispatcher_unix.cpp:937
#4  0x00007f01245d638f in QEventLoop::processEvents (this=this@entry=0x7f010da19d90, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f01245d6618 in QEventLoop::exec (this=this@entry=0x7f010da19d90, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007f01244d8410 in QThread::exec (this=this@entry=0x1b41960) at thread/qthread.cpp:542
#7  0x00007f01245b7edf in QInotifyFileSystemWatcherEngine::run (this=0x1b41960) at io/qfilesystemwatcher_inotify.cpp:256
#8  0x00007f01244dabec in QThreadPrivate::start (arg=0x1b41960) at thread/qthread_unix.cpp:338
#9  0x00007f011cdf0f8e in start_thread (arg=0x7f010da1a700) at pthread_create.c:311
#10 0x00007f0129175e1d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 1 (Thread 0x7f01298377c0 (LWP 3473)):
[KCrash Handler]
#6  0x0000000000000000 in ?? ()
#7  0x00007f01239f9359 in QETWidget::translateMouseEvent (this=this@entry=0x1e7fe80, event=event@entry=0x7fff8675a2e0) at kernel/qapplication_x11.cpp:4372
#8  0x00007f01239f7ef1 in QApplication::x11ProcessEvent (this=0x7fff8675a840, event=event@entry=0x7fff8675a2e0) at kernel/qapplication_x11.cpp:3746
#9  0x00007f0123a23b39 in QEventDispatcherX11::processEvents (this=0xba0ad0, flags=...) at kernel/qeventdispatcher_x11.cpp:132
#10 0x00007f01245d638f in QEventLoop::processEvents (this=this@entry=0x7fff8675a550, flags=...) at kernel/qeventloop.cpp:149
#11 0x00007f01245d6618 in QEventLoop::exec (this=this@entry=0x7fff8675a550, flags=...) at kernel/qeventloop.cpp:204
#12 0x00007f01245dbcf6 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1218
#13 0x00007f012397bffc in QApplication::exec () at kernel/qapplication.cpp:3828
#14 0x00007f01294ac04a in kdemain (argc=3, argv=0x7fff8675a988) at ../../kwin/main.cpp:537
#15 0x00007f012909dea5 in __libc_start_main (main=0x4006d0 <main(int, char**)>, argc=3, ubp_av=0x7fff8675a988, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff8675a978) at libc-start.c:260
#16 0x0000000000400701 in _start ()

Possible duplicates by query: bug 320497, bug 319107, bug 318186, bug 317720, bug 311102.

Reported using DrKonqi