Version:            (using KDE 4.2.1)
Compiler:          gcc-c++ 4.3-34.168 The compiler is inatlled from repo: http://download.opensuse.org/distribution/11.1/repo/oss/
OS:                Linux
Installed from:    SuSE RPMs

No matter what I do, it would crash after just a few clicks...
Usually when I right click on a class and than properties and I change stuff there and if I wanna change some data for another class it would crash.
This time it crashed when I closed it.

umbrello -v:
Qt: 4.4.3
KDE: 4.2.1 (KDE 4.2.1) "release 103"
Umbrello UML Modeller: 2.2.1

However I get this message after it crashes: 



Unable to create a valid backtrace.

This backtrace appears to be of no use.
This is probably because your packages are built in a way which prevents creation of proper backtraces, 
or the stack frame was seriously corrupted in the crash.

[?1034h(no debugging symbols found)
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[Thread debugging using libthread_db enabled]
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0xffffe430 in __kernel_vsyscall ()
[Current thread is 1 (Thread 0xb5afb700 (LWP 7603))]

Thread 1 (Thread 0xb5afb700 (LWP 7603)):
#0  0xffffe430 in __kernel_vsyscall ()
#1  0xb61f1e96 in nanosleep () from /lib/libc.so.6
#2  0xb61f1c7e in sleep () from /lib/libc.so.6
#3  0xb7868bfa in ?? () from /usr/lib/libkdeui.so.5
#4  0xb786962c in KCrash::defaultCrashHandler(int) () from /usr/lib/libkdeui.so.5
#5  <signal handler called>
#6  0x0865bc77 in ?? ()
#7  0x08667160 in ?? ()
#8  0xb6843580 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQtCore.so.4
#9  0xb6844302 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#10 0x08743219 in ?? ()
#11 0x086f3615 in ?? ()
#12 0x08743abf in ?? ()
#13 0xb6533cb1 in Q3ScrollView::viewportMousePressEvent(QMouseEvent*) () from /usr/lib/libQt3Support.so.4
#14 0xb6535890 in Q3ScrollView::eventFilter(QObject*, QEvent*) () from /usr/lib/libQt3Support.so.4
#15 0xb682db3a in QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#16 0xb6a348da in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#17 0xb6a3d111 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#18 0xb77fca3d in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#19 0xb682e961 in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#20 0xb6a3c39e in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&) () from /usr/lib/libQtGui.so.4
#21 0xb6aa6756 in ?? () from /usr/lib/libQtGui.so.4
#22 0xb6aa5b05 in QApplication::x11ProcessEvent(_XEvent*) () from /usr/lib/libQtGui.so.4
#23 0xb6ace0ca in ?? () from /usr/lib/libQtGui.so.4
#24 0xb5c669a8 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#25 0xb5c6a063 in ?? () from /usr/lib/libglib-2.0.so.0
#26 0xb5c6a221 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#27 0xb6858fb8 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#28 0xb6acd7c5 in ?? () from /usr/lib/libQtGui.so.4
#29 0xb682d01a in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#30 0xb682d1da in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#31 0xb682f895 in QCoreApplication::exec() () from /usr/lib/libQtCore.so.4
#32 0xb6a34777 in QApplication::exec() () from /usr/lib/libQtGui.so.4
#33 0x086beae5 in ?? ()
#34 0xb616e705 in __libc_start_main () from /lib/libc.so.6
#35 0x08071061 in _start ()