Application: KWin (kwin), signal SIGABRT
Using host libthread_db library "/lib/libthread_db.so.1".
[Thread debugging using libthread_db enabled]
[New Thread 0xb65606d0 (LWP 5385)]
[KCrash handler]
#6  0xffffe410 in __kernel_vsyscall ()
#7  0xb67f4101 in raise () from /lib/libc.so.6
#8  0xb67f58e8 in abort () from /lib/libc.so.6
#9  0xb78b0d13 in qt_message_output (msgType=QtFatalMsg, 
    buf=0xbfd972dc "ASSERT: \"y1 <= y2\" in file painting/qregion_unix.cpp, line 1316") at global/qglobal.cpp:2047
#10 0xb78b0dcb in qFatal (msg=0xb79f9a4c "ASSERT: \"%s\" in file %s, line %d")
    at global/qglobal.cpp:2249
#11 0xb78b125f in qt_assert (assertion=0xb750c6aa "y1 <= y2", 
    file=0xb750c671 "painting/qregion_unix.cpp", line=1316)
    at global/qglobal.cpp:1821
#12 0xb7094bdf in miUnionNonO (dest=@0x83ffce0, r=0x83ff108, rEnd=0x83ff118, 
    y1=361, y2=358) at painting/qregion_unix.cpp:1316
#13 0xb7096b55 in miRegionOp (dest=@0x83ffce0, reg1=<value optimized out>, 
    reg2=<value optimized out>, overlapFunc=0xb7094424 <miUnionO>, 
    nonOverlap1Func=0xb7094a9a <miUnionNonO>, 
    nonOverlap2Func=0xb7094a9a <miUnionNonO>)
    at painting/qregion_unix.cpp:1259
#14 0xb709770d in UnionRegion (reg1=0x83ffce0, reg2=0xbfd99498, 
    dest=@0x83ffce0) at painting/qregion_unix.cpp:1407
#15 0xb7099201 in QRegion::operator+= (this=0x81f100c, r=@0xbfd9951c)
    at painting/qregion_unix.cpp:3075
#16 0xb7ec2217 in KWin::Toplevel::addDamage (this=0x81f0fd0, x=950, y=343, 
    w=10, h=18)
    at /var/tmp/portage/kde-base/kdebase-9999.4/work/kdebase-9999.4/workspace/kwin/composite.cpp:516
#17 0xb7ec2371 in KWin::Toplevel::damageNotifyEvent (this=0x81f0fd0, 
    e=0xbfd99ab8)
    at /var/tmp/portage/kde-base/kdebase-9999.4/work/kdebase-9999.4/workspace/kwin/composite.cpp:484
#18 0xb7ec23a2 in KWin::Client::damageNotifyEvent (this=0x81f0fd0, 
    e=0xbfd99ab8)
    at /var/tmp/portage/kde-base/kdebase-9999.4/work/kdebase-9999.4/workspace/kwin/composite.cpp:493
#19 0xb7e904aa in KWin::Client::windowEvent (this=0x81f0fd0, e=0xbfd99ab8)
    at /var/tmp/portage/kde-base/kdebase-9999.4/work/kdebase-9999.4/workspace/kwin/events.cpp:720
#20 0xb7e9089a in KWin::Workspace::workspaceEvent (this=0x80e9018, 
    e=0xbfd99ab8)
    at /var/tmp/portage/kde-base/kdebase-9999.4/work/kdebase-9999.4/workspace/kwin/events.cpp:310
#21 0xb7e8151a in KWin::Application::x11EventFilter (this=0xbfd99cc4, 
    e=0xbfd99ab8)
    at /var/tmp/portage/kde-base/kdebase-9999.4/work/kdebase-9999.4/workspace/kwin/main.cpp:359
#22 0xb6f4b86e in qt_x11EventFilter (ev=0xbfd99ab8)
    at kernel/qapplication_x11.cpp:367
#23 0xb6f587fd in QApplication::x11ProcessEvent (this=0xbfd99cc4, 
    event=0xbfd99ab8) at kernel/qapplication_x11.cpp:2972
#24 0xb6f7fec4 in QEventDispatcherX11::processEvents (this=0x8054448, 
    flags=@0xbfd99ba4) at kernel/qeventdispatcher_x11.cpp:134
#25 0xb79a3abb in QEventLoop::processEvents (this=0xbfd99c10, 
    flags=@0xbfd99bd8) at kernel/qeventloop.cpp:146
#26 0xb79a3bcb in QEventLoop::exec (this=0xbfd99c10, flags=@0xbfd99c18)
    at kernel/qeventloop.cpp:197
#27 0xb79a5e29 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:838
#28 0xb6eeef0d in QApplication::exec () at kernel/qapplication.cpp:3267
#29 0xb7e82ae0 in kdemain (argc=3, argv=0xbfd99e84)
    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 0xb67e0fdc in __libc_start_main () from /lib/libc.so.6
#32 0x08048711 in _start ()
#0  0xffffe410 in __kernel_vsyscall ()