Application: kwin (4.10.1)
KDE Platform Version: 4.10.1
Qt Version: 4.8.2
Operating System: Linux 3.5.0-18-generic x86_64
Distribution: Ubuntu 12.04.2 LTS

-- Information about the crash:
- What I was doing when the application crashed:
Tried to close Mathematica Welcome screen when it was thinking of something. The close button didn't animate to become pressed,  and I then pressed F12 almost immediately to get Yakuake window. Then some animation appeared showing like window coming form top (maybe it was Yakuake window), and window decorations disappeared.

-- 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 0x7fba451997c0 (LWP 2343))]

Thread 3 (Thread 0x7fba1731e700 (LWP 2353)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007fba4126a222 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007fba4126a259 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007fba40808754 in ?? () from /usr/lib/nvidia-experimental-304/libGL.so.1
#4  0x00007fba3899de9a in start_thread (arg=0x7fba1731e700) at pthread_create.c:308
#5  0x00007fba449abcbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#6  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7fba2705a700 (LWP 1779)):
#0  0x00007fba449a5023 in select () at ../sysdeps/unix/syscall-template.S:82
#1  0x00007fba3fcdb866 in qt_safe_select (nfds=25, fdread=0x7fba20000af8, fdwrite=0x7fba20000d90, fdexcept=0x7fba20001028, orig_timeout=<optimized out>) at kernel/qcore_unix.cpp:83
#2  0x00007fba3fce0cb2 in QEventDispatcherUNIXPrivate::doSelect (this=0x7fba20000940, flags=..., timeout=0x0) at kernel/qeventdispatcher_unix.cpp:223
#3  0x00007fba3fce11a3 in QEventDispatcherUNIX::processEvents (this=0x7fba20000920, flags=...) at kernel/qeventdispatcher_unix.cpp:926
#4  0x00007fba3fcade62 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007fba3fcae0b7 in QEventLoop::exec (this=0x7fba27059cd0, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007fba3fbad077 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#7  0x00007fba3fc8db6f in QInotifyFileSystemWatcherEngine::run (this=0x20e8d60) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007fba3fbb009b in QThreadPrivate::start (arg=0x20e8d60) at thread/qthread_unix.cpp:307
#9  0x00007fba40808754 in ?? () from /usr/lib/nvidia-experimental-304/libGL.so.1
#10 0x00007fba3899de9a in start_thread (arg=0x7fba2705a700) at pthread_create.c:308
#11 0x00007fba449abcbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#12 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fba451997c0 (LWP 2343)):
[KCrash Handler]
#6  0x0000000000000000 in ?? ()
#7  0x00007fba3f0b0fd3 in QETWidget::translateMouseEvent (this=0x1a3c350, event=0x7fff0e817340) at kernel/qapplication_x11.cpp:4358
#8  0x00007fba3f0aface in QApplication::x11ProcessEvent (this=0x7fff0e817610, event=0x7fff0e817340) at kernel/qapplication_x11.cpp:3732
#9  0x00007fba3f0d9aba in QEventDispatcherX11::processEvents (this=0x179bad0, flags=...) at kernel/qeventdispatcher_x11.cpp:132
#10 0x00007fba3fcade62 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#11 0x00007fba3fcae0b7 in QEventLoop::exec (this=0x7fff0e817590, flags=...) at kernel/qeventloop.cpp:204
#12 0x00007fba3fcb3407 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1187
#13 0x00007fba44cdfcbb in kdemain (argc=<optimized out>, argv=<optimized out>) at ../../kwin/main.cpp:537
#14 0x00007fba448d976d in __libc_start_main (main=0x400640 <main(int, char**)>, argc=3, ubp_av=0x7fff0e817d08, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff0e817cf8) at libc-start.c:226
#15 0x0000000000400671 in _start ()

Possible duplicates by query: bug 319107, bug 318186, bug 317720, bug 311102, bug 311066.

Reproducible: Always