Application: KWin (kwin), signal SIGABRT
Using host libthread_db library "/lib/libthread_db.so.1".
[Thread debugging using libthread_db enabled]
[New Thread 0xb66136d0 (LWP 10466)]
[New Thread 0xb4bcab90 (LWP 20341)]
[KCrash handler]
#6  0xffffe410 in __kernel_vsyscall ()
#7  0xb68a7101 in raise () from /lib/libc.so.6
#8  0xb68a88e8 in abort () from /lib/libc.so.6
#9  0xb7963d13 in qt_message_output (msgType=QtFatalMsg, 
    buf=0xbfceba6c "ASSERT: \"y1 <= y2\" in file painting/qregion_unix.cpp, line 1316") at global/qglobal.cpp:2047
#10 0xb7963dcb in qFatal (msg=0xb7aaca4c "ASSERT: \"%s\" in file %s, line %d")
    at global/qglobal.cpp:2249
#11 0xb796425f in qt_assert (assertion=0xb75bf6aa "y1 <= y2", 
    file=0xb75bf671 "painting/qregion_unix.cpp", line=1316)
    at global/qglobal.cpp:1821
#12 0xb7147bdf in miUnionNonO (dest=@0x8394dc8, r=0x8475290, rEnd=0x84752a0, 
    y1=471, y2=468) at painting/qregion_unix.cpp:1316
#13 0xb7149b55 in miRegionOp (dest=@0x8394dc8, reg1=<value optimized out>, 
    reg2=<value optimized out>, overlapFunc=0xb7147424 <miUnionO>, 
    nonOverlap1Func=0xb7147a9a <miUnionNonO>, 
    nonOverlap2Func=0xb7147a9a <miUnionNonO>)
    at painting/qregion_unix.cpp:1259
#14 0xb714a70d in UnionRegion (reg1=0x8394dc8, reg2=0xbfcedc28, 
    dest=@0x8394dc8) at painting/qregion_unix.cpp:1407
#15 0xb714c201 in QRegion::operator+= (this=0x817c84c, r=@0xbfcedcac)
    at painting/qregion_unix.cpp:3075
#16 0xb7f75217 in KWin::Toplevel::addDamage (this=0x817c810, x=945, y=453, 
    w=10, h=18)
    at /var/tmp/portage/kde-base/kdebase-9999.4/work/kdebase-9999.4/workspace/kwin/composite.cpp:516
#17 0xb7f75371 in KWin::Toplevel::damageNotifyEvent (this=0x817c810, 
    e=0xbfcee248)
    at /var/tmp/portage/kde-base/kdebase-9999.4/work/kdebase-9999.4/workspace/kwin/composite.cpp:484
#18 0xb7f753a2 in KWin::Client::damageNotifyEvent (this=0x817c810, 
    e=0xbfcee248)
    at /var/tmp/portage/kde-base/kdebase-9999.4/work/kdebase-9999.4/workspace/kwin/composite.cpp:493
#19 0xb7f434aa in KWin::Client::windowEvent (this=0x817c810, e=0xbfcee248)
    at /var/tmp/portage/kde-base/kdebase-9999.4/work/kdebase-9999.4/workspace/kwin/events.cpp:720
#20 0xb7f4389a in KWin::Workspace::workspaceEvent (this=0x80c5178, 
    e=0xbfcee248)
    at /var/tmp/portage/kde-base/kdebase-9999.4/work/kdebase-9999.4/workspace/kwin/events.cpp:310
#21 0xb7f3451a in KWin::Application::x11EventFilter (this=0xbfcee454, 
    e=0xbfcee248)
    at /var/tmp/portage/kde-base/kdebase-9999.4/work/kdebase-9999.4/workspace/kwin/main.cpp:359
#22 0xb6ffe86e in qt_x11EventFilter (ev=0xbfcee248)
    at kernel/qapplication_x11.cpp:367
#23 0xb700b7fd in QApplication::x11ProcessEvent (this=0xbfcee454, 
    event=0xbfcee248) at kernel/qapplication_x11.cpp:2972
#24 0xb7032ec4 in QEventDispatcherX11::processEvents (this=0x8054448, 
    flags=@0xbfcee334) at kernel/qeventdispatcher_x11.cpp:134
#25 0xb7a56abb in QEventLoop::processEvents (this=0xbfcee3a0, 
    flags=@0xbfcee368) at kernel/qeventloop.cpp:146
#26 0xb7a56bcb in QEventLoop::exec (this=0xbfcee3a0, flags=@0xbfcee3a8)
    at kernel/qeventloop.cpp:197
#27 0xb7a58e29 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:838
#28 0xb6fa1f0d in QApplication::exec () at kernel/qapplication.cpp:3267
#29 0xb7f35ae0 in kdemain (argc=1, argv=0xbfcee614)
    at /var/tmp/portage/kde-base/kdebase-9999.4/work/kdebase-9999.4/workspace/kwin/main.cpp:508
#30 0x080487af in main (argc=)
    at /var/tmp/portage/kde-base/kdebase-9999.4/work/kdebase_build/workspace/kwin/kwin_dummy.cpp:3
#31 0xb6893fdc in __libc_start_main () from /lib/libc.so.6
#32 0x08048711 in _start ()
#0  0xffffe410 in __kernel_vsyscall ()