Application: kwin (4.6.2 (4.6.2))
KDE Platform Version: 4.6.2 (4.6.2)
Qt Version: 4.7.2
Operating System: Linux 2.6.38-8-generic i686
Distribution: Ubuntu 11.04

-- Information about the crash:
- What I was doing when the application crashed:
Was changing the position of the edge of default panel, unlock the graphic elements and the main panel was above what I put aside left and failure, had the program open Netbeans
- Unusual behavior I noticed:
The screen flashes sometimes when I move the windows

-- Backtrace:
Application: KWin (kwin), signal: Segmentation fault
[Current thread is 1 (Thread 0xb784e720 (LWP 1629))]

Thread 3 (Thread 0xb2c0fb70 (LWP 1688)):
#0  0x412e7d41 in clock_gettime () from /lib/i386-linux-gnu/librt.so.1
#1  0x41d3a118 in do_gettime () at tools/qelapsedtimer_unix.cpp:123
#2  qt_gettime () at tools/qelapsedtimer_unix.cpp:140
#3  0x41e06832 in updateCurrentTime (this=0x9d1f7d8, tm=...) at kernel/qeventdispatcher_unix.cpp:339
#4  QTimerInfoList::timerWait (this=0x9d1f7d8, tm=...) at kernel/qeventdispatcher_unix.cpp:442
#5  0x41e086e3 in QEventDispatcherUNIX::processEvents (this=0x9cbecd0, flags=...) at kernel/qeventdispatcher_unix.cpp:906
#6  0x41dd75c9 in QEventLoop::processEvents (this=0xb2c0f280, flags=...) at kernel/qeventloop.cpp:149
#7  0x41dd7862 in QEventLoop::exec (this=0xb2c0f280, flags=...) at kernel/qeventloop.cpp:201
#8  0x41ce15e0 in QThread::exec (this=0x9cf3868) at thread/qthread.cpp:492
#9  0x41db931b in QInotifyFileSystemWatcherEngine::run (this=0x9cf3868) at io/qfilesystemwatcher_inotify.cpp:248
#10 0x41ce40e2 in QThreadPrivate::start (arg=0x9cf3868) at thread/qthread_unix.cpp:320
#11 0x412cee99 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#12 0x4123073e in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 2 (Thread 0xb22ffb70 (LWP 1689)):
#0  0x00bf3416 in __kernel_vsyscall ()
#1  0x412d348c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2  0x4123e3fd in pthread_cond_wait () from /lib/i386-linux-gnu/libc.so.6
#3  0x43a6c4f7 in QTWTF::TCMalloc_PageHeap::scavengerThread (this=0x43b7fea0) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#4  0x43a6c531 in QTWTF::TCMalloc_PageHeap::runScavengerThread (context=0x43b7fea0) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#5  0x412cee99 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#6  0x4123073e in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 1 (Thread 0xb784e720 (LWP 1629)):
[KCrash Handler]
#7  KWin::CloseWindowView::hide (this=0x0) at ../../../kwin/effects/presentwindows/presentwindows.cpp:2096
#8  0x006ec246 in KWin::PresentWindowsEffect::setHighlightedWindow (this=0x9a71d00, w=0x0) at ../../../kwin/effects/presentwindows/presentwindows.cpp:1776
#9  0x006f80d4 in KWin::PresentWindowsEffect::windowClosed (this=0x9a71d00, w=0xab01838) at ../../../kwin/effects/presentwindows/presentwindows.cpp:424
#10 0x42a867e4 in KWin::EffectsHandlerImpl::windowClosed (this=0x96d3d18, c=0xab01838) at ../../kwin/effects.cpp:322
#11 0x429e513b in KWin::Client::releaseWindow (this=0xa589a38, on_shutdown=false) at ../../kwin/client.cpp:238
#12 0x42a133fd in KWin::Client::unmapNotifyEvent (this=0xa589a38, e=0xbfce638c) at ../../kwin/events.cpp:809
#13 0x42a16fac in KWin::Client::windowEvent (this=0xa589a38, e=0xbfce638c) at ../../kwin/events.cpp:655
#14 0x42a17c6c in KWin::Workspace::workspaceEvent (this=0x9a022b0, e=0xbfce638c) at ../../kwin/events.cpp:323
#15 0x429f0de2 in KWin::Application::x11EventFilter (this=0xbfce6574, e=0xbfce638c) at ../../kwin/main.cpp:367
#16 0x45a6d514 in qt_x11EventFilter (ev=0xbfce638c) at kernel/qapplication_x11.cpp:440
#17 0x45a7e307 in QApplication::x11ProcessEvent (this=0xbfce6574, event=0xbfce638c) at kernel/qapplication_x11.cpp:3390
#18 0x45aaade0 in QEventDispatcherX11::processEvents (this=0x95eeac0, flags=...) at kernel/qeventdispatcher_x11.cpp:132
#19 0x41dd75c9 in QEventLoop::processEvents (this=0xbfce64b4, flags=...) at kernel/qeventloop.cpp:149
#20 0x41dd7862 in QEventLoop::exec (this=0xbfce64b4, flags=...) at kernel/qeventloop.cpp:201
#21 0x41ddc20c in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1008
#22 0x459f3fe7 in QApplication::exec () at kernel/qapplication.cpp:3736
#23 0x429f3892 in kdemain (argc=1, argv=0xbfce67f4) at ../../kwin/main.cpp:542
#24 0x080485bb in main (argc=1, argv=0xbfce67f4) at kwin_dummy.cpp:3

Possible duplicates by query: bug 273279, bug 271087, bug 270872, bug 269270, bug 266364.

Reported using DrKonqi