Application: kwin (4.10.00)
KDE Platform Version: 4.10.00
Qt Version: 4.8.3
Operating System: Linux 3.5.0-25-generic x86_64
Distribution: Linux Mint 14 Nadia

-- Information about the crash:
- What I was doing when the application crashed:
Went into settings, selected a new window decorartion theme and clicked apply. Does not matter what decoration I choose. It happens everytime. All of the windows are functional just without a border or title bar. Sometimes using "kwin --replace" will correct the issue while sometimes logging out is the only way to fix it.

The crash can be reproduced every time.

-- 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 0x7f9d968a47c0 (LWP 6168))]

Thread 2 (Thread 0x7f9d7a18f700 (LWP 6170)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f9d929a5cd7 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007f9d929a5d09 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007f9d8a483e9a in start_thread (arg=0x7f9d7a18f700) at pthread_create.c:308
#4  0x00007f9d960aecbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f9d968a47c0 (LWP 6168)):
[KCrash Handler]
#6  0x0000000000000031 in ?? ()
#7  0x00007f9d9502fdd7 in QDeclarativeItem::~QDeclarativeItem (this=0x213d680, __in_chrg=<optimized out>) at graphicsitems/qdeclarativeitem.cpp:1668
#8  0x00007f9d94ff36ee in ~QDeclarativeElement (this=0x213d680, __in_chrg=<optimized out>) at ../../include/QtDeclarative/../../src/declarative/qml/qdeclarativeprivate.h:87
#9  QDeclarativePrivate::QDeclarativeElement<QDeclarativeItem>::~QDeclarativeElement (this=0x213d680, __in_chrg=<optimized out>) at ../../include/QtDeclarative/../../src/declarative/qml/qdeclarativeprivate.h:87
#10 0x00007f9d914d9498 in QObject::event (this=0x213d680, e=<optimized out>) at kernel/qobject.cpp:1176
#11 0x00007f9d9086be9c in QApplicationPrivate::notify_helper (this=this@entry=0x1b63190, receiver=receiver@entry=0x213d680, e=e@entry=0x27a1fd0) at kernel/qapplication.cpp:4562
#12 0x00007f9d9087030a in QApplication::notify (this=0x7fff9cb61c20, receiver=0x213d680, e=0x27a1fd0) at kernel/qapplication.cpp:4423
#13 0x00007f9d95b9c636 in KApplication::notify (this=0x7fff9cb61c20, receiver=0x213d680, event=0x27a1fd0) at ../../kdeui/kernel/kapplication.cpp:311
#14 0x00007f9d914c459e in QCoreApplication::notifyInternal (this=0x7fff9cb61c20, receiver=receiver@entry=0x213d680, event=event@entry=0x27a1fd0) at kernel/qcoreapplication.cpp:915
#15 0x00007f9d914c8421 in sendEvent (event=0x27a1fd0, receiver=0x213d680) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#16 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x1afb1f0) at kernel/qcoreapplication.cpp:1539
#17 0x00007f9d9091189c in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#18 QEventDispatcherX11::processEvents (this=0x1afcad0, flags=...) at kernel/qeventdispatcher_x11.cpp:75
#19 0x00007f9d914c32ef in QEventLoop::processEvents (this=this@entry=0x7fff9cb61930, flags=...) at kernel/qeventloop.cpp:149
#20 0x00007f9d914c3578 in QEventLoop::exec (this=0x7fff9cb61930, flags=...) at kernel/qeventloop.cpp:204
#21 0x00007f9d914c8738 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1187
#22 0x00007f9d963e1d5a in kdemain (argc=2, argv=0x7fff9cb61d68) at ../../kwin/main.cpp:537
#23 0x00007f9d95fdc76d in __libc_start_main (main=0x4006a0 <main(int, char**)>, argc=2, ubp_av=0x7fff9cb61d68, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff9cb61d58) at libc-start.c:226
#24 0x00000000004006d1 in _start ()

Possible duplicates by query: bug 316001, bug 315087, bug 314891, bug 314758, bug 314737.

Reported using DrKonqi