Application: kwin (4.5.00 (KDE 4.5.0))
KDE Platform Version: 4.5.00 (KDE 4.5.0)
Qt Version: 4.7.0
Operating System: Linux 2.6.35-17-generic x86_64
Distribution: Ubuntu maverick (development branch)

-- Information about the crash:
kwin crashed while Wine was running Worms Reloaded.

nvidia 256.44 (official nvidia drivers)
Xorg 1.9 with ignoreabi.

-- Backtrace:
Application: KWin (kwin), signal: Aborted
[KCrash Handler]
#6  0x00007f72d6d52ba5 in *__GI_raise (sig=<value optimized out>) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
#7  0x00007f72d6d566b0 in *__GI_abort () at abort.c:92
#8  0x00007f72d6d8c43b in __libc_message (do_abort=<value optimized out>, fmt=<value optimized out>) at ../sysdeps/unix/sysv/linux/libc_fatal.c:189
#9  0x00007f72d6d964b6 in malloc_printerr (action=3, str=0x7f72d6e66e33 "free(): invalid pointer", ptr=<value optimized out>) at malloc.c:6283
#10 0x00007f72d2923d65 in ~QTessellatorPrivate (this=<value optimized out>, __in_chrg=<value optimized out>) at painting/qtessellator.cpp:74
#11 ~QTessellator (this=<value optimized out>, __in_chrg=<value optimized out>) at painting/qtessellator.cpp:1206
#12 0x00007f72d298bd1f in ~QXRenderTessellator (this=0x4787960, __in_chrg=<value optimized out>) at painting/qpaintengine_x11.cpp:256
#13 0x00007f72d29810e8 in ~QX11PaintEngine (this=0x37433f0, __in_chrg=<value optimized out>) at painting/qpaintengine_x11.cpp:472
#14 0x00007f72d28659a8 in QX11PixmapData::release (this=0x4226420) at image/qpixmap_x11.cpp:1249
#15 0x00007f72d28661da in ~QX11PixmapData (this=0x4226420, __in_chrg=<value optimized out>) at image/qpixmap_x11.cpp:1244
#16 0x00007f72d28534a0 in QExplicitlySharedDataPointer<QPixmapData>::operator= (this=0x2cb59a8, pixmap=<value optimized out>) at ../../include/QtCore/../../src/corelib/tools/qshareddata.h:178
#17 QPixmap::operator= (this=0x2cb59a8, pixmap=<value optimized out>) at image/qpixmap.cpp:437
#18 0x00007f72d717ed9d in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#19 0x00007f72d362f2e9 in QObject::event (this=0x2cb5980, e=0x1358) at kernel/qobject.cpp:1183
#20 0x00007f72d276c68c in QApplicationPrivate::notify_helper (this=0x2549670, receiver=0x2cb5980, e=0x7fff1b65d7a0) at kernel/qapplication.cpp:4389
#21 0x00007f72d277219d in QApplication::notify (this=0x7fff1b65db90, receiver=0x2cb5980, e=0x7fff1b65d7a0) at kernel/qapplication.cpp:4270
#22 0x00007f72d6901b16 in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#23 0x00007f72d361d6cc in QCoreApplication::notifyInternal (this=0x7fff1b65db90, receiver=0x2cb5980, event=0x7fff1b65d7a0) at kernel/qcoreapplication.cpp:732
#24 0x00007f72d364d0b2 in QCoreApplication::sendEvent (this=0x254a080) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#25 QTimerInfoList::activateTimers (this=0x254a080) at kernel/qeventdispatcher_unix.cpp:602
#26 0x00007f72d364d1ec in QEventDispatcherUNIX::processEvents (this=0x2526170, flags=) at kernel/qeventdispatcher_unix.cpp:923
#27 0x00007f72d281fb4f in QEventDispatcherX11::processEvents (this=<value optimized out>, flags=) at kernel/qeventdispatcher_x11.cpp:152
#28 0x00007f72d361c3f2 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#29 0x00007f72d361c7dc in QEventLoop::exec (this=0x7fff1b65dad0, flags=) at kernel/qeventloop.cpp:201
#30 0x00007f72d36208ab in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1009
#31 0x00007f72d70f5f7d in kdemain () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#32 0x00007f72d6d3dd8e in __libc_start_main (main=<value optimized out>, argc=<value optimized out>, ubp_av=<value optimized out>, init=<value optimized out>, fini=<value optimized out>, 
    rtld_fini=<value optimized out>, stack_end=0x7fff1b65e198) at libc-start.c:226
#33 0x0000000000400669 in _start ()

Reported using DrKonqi