Application that crashed: ksysguard
Version of the application: 4.3.00 (KDE 4.3.0)
KDE Version: 4.3.00 (KDE 4.3.0)
Qt Version: 4.5.2
Operating System: Linux 2.6.30-4.slh.1-sidux-686 i686
Distribution: Debian GNU/Linux unstable (sid)

What I was doing when the application crashed:
Just changing the default color on the background on the network history graph creates instant crash of the application

 -- Backtrace:
Application: System Monitor (ksysguard), signal: Segmentation fault
[KCrash Handler]
#6  0xb7f63849 in ?? () from /usr/lib/libkdeinit4_ksysguard.so
#7  0xb7f47db8 in ?? () from /usr/lib/libkdeinit4_ksysguard.so
#8  0xb7f48dc3 in ?? () from /usr/lib/libkdeinit4_ksysguard.so
#9  0xb7372ad3 in QMetaObject::activate (sender=0x93d1a40, from_signal_index=43, to_signal_index=43, argv=0x0) at kernel/qobject.cpp:3112
#10 0xb7373722 in QMetaObject::activate (sender=0x93d1a40, m=0xb7a74524, local_signal_index=7, argv=0x0) at kernel/qobject.cpp:3186
#11 0xb7837a77 in KDialog::applyClicked (this=0x93d1a40) at ./kdialog.moc:240
#12 0xb783a0ca in KDialog::slotButtonClicked (this=0x93d1a40, button=8) at ../../kdeui/dialogs/kdialog.cpp:858
#13 0xb783c332 in KDialog::qt_metacall (this=0x93d1a40, _c=QMetaObject::InvokeMetaMethod, _id=33, _a=0xbfbf341c) at ./kdialog.moc:184
#14 0xb79018ea in KPageDialog::qt_metacall (this=0x93d1a40, _c=QMetaObject::InvokeMetaMethod, _id=69, _a=0xbfbf341c) at ./kpagedialog.moc:64
#15 0xb7f4abaa in ?? () from /usr/lib/libkdeinit4_ksysguard.so
#16 0xb7372ad3 in QMetaObject::activate (sender=0x9317108, from_signal_index=4, to_signal_index=4, argv=0xbfbf341c) at kernel/qobject.cpp:3112
#17 0xb7373722 in QMetaObject::activate (sender=0x9317108, m=0xb744dcf8, local_signal_index=0, argv=0xbfbf341c) at kernel/qobject.cpp:3186
#18 0xb7376343 in QSignalMapper::mapped (this=0x9317108, _t1=8) at .moc/release-shared/moc_qsignalmapper.cpp:95
#19 0xb7376bcd in QSignalMapper::map (this=0x9317108, sender=0x93c7560) at kernel/qsignalmapper.cpp:266
#20 0xb7376dbe in QSignalMapper::map (this=0x9317108) at kernel/qsignalmapper.cpp:257
#21 0xb737768b in QSignalMapper::qt_metacall (this=0x9317108, _c=QMetaObject::InvokeMetaMethod, _id=4, _a=0xbfbf359c) at .moc/release-shared/moc_qsignalmapper.cpp:81
#22 0xb7372ad3 in QMetaObject::activate (sender=0x93c7560, from_signal_index=29, to_signal_index=30, argv=0xbfbf359c) at kernel/qobject.cpp:3112
#23 0xb7372f00 in QMetaObject::activate (sender=0x93c7560, m=0xb71c2924, from_local_signal_index=2, to_local_signal_index=3, argv=0xbfbf359c) at kernel/qobject.cpp:3206
#24 0xb6fdb951 in QAbstractButton::clicked (this=0x93c7560, _t1=false) at .moc/release-shared/moc_qabstractbutton.cpp:200
#25 0xb6d07329 in QAbstractButtonPrivate::emitClicked (this=0x93c6b78) at widgets/qabstractbutton.cpp:543
#26 0xb6d08f14 in QAbstractButtonPrivate::click (this=0x93c6b78) at widgets/qabstractbutton.cpp:536
#27 0xb6d091a6 in QAbstractButton::mouseReleaseEvent (this=0x93c7560, e=0xbfbf3c3c) at widgets/qabstractbutton.cpp:1115
#28 0xb69af73b in QWidget::event (this=0x93c7560, event=0xbfbf3c3c) at kernel/qwidget.cpp:7549
#29 0xb6d071ce in QAbstractButton::event (this=0x93c7560, e=0xbfbf3c3c) at widgets/qabstractbutton.cpp:1077
#30 0xb6db0a00 in QPushButton::event (this=0x93c7560, e=0xbfbf3c3c) at widgets/qpushbutton.cpp:662
#31 0xb69597d4 in QApplicationPrivate::notify_helper (this=0x906de38, receiver=0x93c7560, e=0xbfbf3c3c) at kernel/qapplication.cpp:4056
#32 0xb69622a1 in QApplication::notify (this=0x906dd80, receiver=0x93c7560, e=0xbfbf3c3c) at kernel/qapplication.cpp:3758
#33 0xb78d100d in KApplication::notify (this=0x906dd80, receiver=0x93c7560, event=0xbfbf3c3c) at ../../kdeui/kernel/kapplication.cpp:302
#34 0xb735d96b in QCoreApplication::notifyInternal (this=0x906dd80, receiver=0x93c7560, event=0xbfbf3c3c) at kernel/qcoreapplication.cpp:610
#35 0xb696132e in QCoreApplication::sendSpontaneousEvent (receiver=0x93c7560, event=0xbfbf3c3c, alienWidget=0x93c7560, nativeWidget=0x93d1a40, buttonDown=0xb71cfaa0, lastMouseReceiver=...)
    at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:216
#36 QApplicationPrivate::sendMouseEvent (receiver=0x93c7560, event=0xbfbf3c3c, alienWidget=0x93c7560, nativeWidget=0x93d1a40, buttonDown=0xb71cfaa0, lastMouseReceiver=...)
    at kernel/qapplication.cpp:2924
#37 0xb69cfe55 in QETWidget::translateMouseEvent (this=0x93d1a40, event=0xbfbf51ec) at kernel/qapplication_x11.cpp:4409
#38 0xb69cf336 in QApplication::x11ProcessEvent (this=0x906dd80, event=0xbfbf51ec) at kernel/qapplication_x11.cpp:3428
#39 0xb69f9842 in x11EventSourceDispatch (s=0x9071068, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#40 0xb626d368 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#41 0xb62708c3 in ?? () from /usr/lib/libglib-2.0.so.0
#42 0xb6270a48 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#43 0xb73887f8 in QEventDispatcherGlib::processEvents (this=0x9058620, flags=...) at kernel/qeventdispatcher_glib.cpp:327
#44 0xb69f8f85 in QGuiEventDispatcherGlib::processEvents (this=0x9058620, flags=...) at kernel/qguieventdispatcher_glib.cpp:202
#45 0xb735bfba in QEventLoop::processEvents (this=0xbfbf5450, flags=...) at kernel/qeventloop.cpp:149
#46 0xb735c402 in QEventLoop::exec (this=0xbfbf5450, flags=...) at kernel/qeventloop.cpp:201
#47 0xb735e859 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#48 0xb6959657 in QApplication::exec () at kernel/qapplication.cpp:3525
#49 0xb7f85bb4 in kdemain () from /usr/lib/libkdeinit4_ksysguard.so
#50 0x080485b2 in _start ()

Reported using DrKonqi