Application: umbrello (2.4.2)
KDE Platform Version: 4.4.2 (KDE 4.4.2)
Qt Version: 4.6.2
Operating System: Linux 2.6.32-22-generic i686
Distribution: Ubuntu 10.04 LTS

-- Information about the crash:
is producing a crash of umbrella. This happens every time I tried.

 -- Backtrace:
Application: Umbrello UML-Modeller (umbrello), signal: Segmentation fault
[Current thread is 1 (Thread 0xb7736710 (LWP 3829))]

Thread 2 (Thread 0xb508bb70 (LWP 3830)):
#0  0x00c86f64 in __pthread_mutex_lock (mutex=0xa5ccff4) at pthread_mutex_lock.c:62
#1  0x05dc12e8 in g_main_context_acquire () from /lib/libglib-2.0.so.0
#2  0x05dc2e5e in ?? () from /lib/libglib-2.0.so.0
#3  0x05dc34b8 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#4  0x0171e60f in QEventDispatcherGlib::processEvents (this=0xa5cf888, flags=...) at kernel/qeventdispatcher_glib.cpp:414
#5  0x016f1059 in QEventLoop::processEvents (this=0xb508b290, flags=) at kernel/qeventloop.cpp:149
#6  0x016f14aa in QEventLoop::exec (this=0xb508b290, flags=...) at kernel/qeventloop.cpp:201
#7  0x015ed5a8 in QThread::exec (this=0xa5c7e10) at thread/qthread.cpp:487
#8  0x016d0c1b in QInotifyFileSystemWatcherEngine::run (this=0xa5c7e10) at io/qfilesystemwatcher_inotify.cpp:248
#9  0x015f032e in QThreadPrivate::start (arg=0xa5c7e10) at thread/qthread_unix.cpp:248
#10 0x00c8496e in start_thread (arg=0xb508bb70) at pthread_create.c:300
#11 0x04902a0e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 1 (Thread 0xb7736710 (LWP 3829)):
[KCrash Handler]
#6  0x00000000 in ?? ()
#7  0x086156ab in Uml::CmdChangeFillColor::undo (this=0xae2e160) at ../../../umbrello/umbrello/cmds/widget/cmd_changeFillColor.cpp:41
#8  0x06ba3427 in QUndoStack::undo (this=0xa3fe3d0) at util/qundostack.cpp:659
#9  0x06bca9f3 in QUndoStack::qt_metacall (this=0xa3fe3d0, _c=QMetaObject::InvokeMetaMethod, _id=8, _a=0xbfac31a8) at .moc/release-shared/moc_qundostack.cpp:105
#10 0x01175962 in KUndoStack::qt_metacall (this=0xa3fe3d0, _c=QMetaObject::InvokeMetaMethod, _id=12, _a=0xbfac31a8) at ./kundostack.moc:64
#11 0x016f7c9a in QMetaObject::metacall (object=0xa3fe3d0, cl=65535, idx=12, argv=0xbfac31a8) at kernel/qmetaobject.cpp:237
#12 0x017063d5 in QMetaObject::activate (sender=0xa381448, m=0x6dbcd58, local_signal_index=1, argv=0xbfac31a8) at kernel/qobject.cpp:3293
#13 0x0648dbd9 in QAction::triggered (this=0xa381448, _t1=false) at .moc/release-shared/moc_qaction.cpp:263
#14 0x0648fdcc in QAction::activate (this=0xa381448, event=QAction::Trigger) at kernel/qaction.cpp:1255
#15 0x06982bd2 in QAction::trigger (this=0xa6d3f9c) at ../../include/QtGui/../../src/gui/kernel/qaction.h:218
#16 QToolButton::nextCheckState (this=0xa6d3f9c) at widgets/qtoolbutton.cpp:1147
#17 0x0689fcb3 in QAbstractButtonPrivate::click (this=0xa54eda8) at widgets/qabstractbutton.cpp:528
#18 0x0689ffae in QAbstractButton::mouseReleaseEvent (this=0xa54ec78, e=0xbfac3910) at widgets/qabstractbutton.cpp:1121
#19 0x0698309c in QToolButton::mouseReleaseEvent (this=0xa54ec78, e=0xbfac3910) at widgets/qtoolbutton.cpp:721
#20 0x064f27f8 in QWidget::event (this=0xa54ec78, event=0xbfac3910) at kernel/qwidget.cpp:7998
#21 0x0689ed4e in QAbstractButton::event (this=0xa54ec78, e=0xa6d3f9c) at widgets/qabstractbutton.cpp:1080
#22 0x06985bca in QToolButton::event (this=0xa54ec78, event=0xbfac3910) at widgets/qtoolbutton.cpp:1163
#23 0x064944dc in QApplicationPrivate::notify_helper (this=0xa3434f8, receiver=0xa54ec78, e=0xbfac3910) at kernel/qapplication.cpp:4300
#24 0x0649b9f7 in QApplication::notify (this=0xbfac41c0, receiver=0xa54ec78, e=0xbfac3910) at kernel/qapplication.cpp:3865
#25 0x010ccf2a in KApplication::notify (this=0xbfac41c0, receiver=0xa54ec78, event=0xbfac3910) at ../../kdeui/kernel/kapplication.cpp:302
#26 0x016f2a3b in QCoreApplication::notifyInternal (this=0xbfac41c0, receiver=0xa54ec78, event=0xbfac3910) at kernel/qcoreapplication.cpp:704
#27 0x0649a952 in QCoreApplication::sendEvent (receiver=0xa54ec78, event=0xbfac3910, alienWidget=0xa54ec78, nativeWidget=0xa536ce8, buttonDown=0x6dd8058, lastMouseReceiver=..., spontaneous=true)
    at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#28 QApplicationPrivate::sendMouseEvent (receiver=0xa54ec78, event=0xbfac3910, alienWidget=0xa54ec78, nativeWidget=0xa536ce8, buttonDown=0x6dd8058, lastMouseReceiver=..., spontaneous=true)
    at kernel/qapplication.cpp:2965
#29 0x06526088 in QETWidget::translateMouseEvent (this=0xa536ce8, event=0xbfac3e2c) at kernel/qapplication_x11.cpp:4368
#30 0x06525511 in QApplication::x11ProcessEvent (this=0xbfac41c0, event=0xbfac3e2c) at kernel/qapplication_x11.cpp:3379
#31 0x0655460a in x11EventSourceDispatch (s=0xa346740, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#32 0x05dbf5e5 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#33 0x05dc32d8 in ?? () from /lib/libglib-2.0.so.0
#34 0x05dc34b8 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#35 0x0171e5d5 in QEventDispatcherGlib::processEvents (this=0xa326150, flags=...) at kernel/qeventdispatcher_glib.cpp:412
#36 0x06554135 in QGuiEventDispatcherGlib::processEvents (this=0xa326150, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#37 0x016f1059 in QEventLoop::processEvents (this=0xbfac4124, flags=) at kernel/qeventloop.cpp:149
#38 0x016f14aa in QEventLoop::exec (this=0xbfac4124, flags=...) at kernel/qeventloop.cpp:201
#39 0x016f569f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:981
#40 0x06494577 in QApplication::exec () at kernel/qapplication.cpp:3579
#41 0x086ac645 in main (argc=1, argv=0xbfac4374) at ../../../umbrello/umbrello/main.cpp:111

Reported using DrKonqi