Application: systemsettings (4.11.22)
KDE Platform Version: 4.14.14
Qt Version: 4.8.7
Operating System: Linux 4.4.0-smp i686
Distribution (Platform): Slackware Packages

-- Information about the crash:
- What I was doing when the application crashed:
I changed default manager from Konqueror to Dolphin, saved and changed back. After I closed the settings it crashed. I think similar crash have happened in the recent past.

-- Backtrace:
Application: System Settings (systemsettings), signal: Segmentation fault
Using host libthread_db library "/lib/libthread_db.so.1".
[KCrash Handler]
#6  0x0805cb40 in QString::shared_null ()
#7  0xffffffff in QObject::disconnect(QObject const*, char const*, QObject const*, char const*) () at /usr/lib/qt/lib/libQtCore.so.4
#8  0xffffffff in KParts::PartManager::~PartManager() () at /usr/lib/libkparts.so.4
#9  0xffffffff in KParts::PartManager::~PartManager() () at /usr/lib/libkparts.so.4
#10 0xffffffff in QObjectPrivate::deleteChildren() () at /usr/lib/qt/lib/libQtCore.so.4
#11 0xffffffff in QObject::~QObject() () at /usr/lib/qt/lib/libQtCore.so.4
#12 0xffffffff in KParts::Part::~Part() () at /usr/lib/libkparts.so.4
#13 0xffffffff in KParts::ReadOnlyPart::~ReadOnlyPart() () at /usr/lib/libkparts.so.4
#14 0xffffffff in KHTMLPart::~KHTMLPart() () at /usr/lib/libkhtml.so.5
#15 0xffffffff in KHTMLPart::~KHTMLPart() () at /usr/lib/libkhtml.so.5
#16 0xffffffff in qDeleteInEventHandler(QObject*) () at /usr/lib/qt/lib/libQtCore.so.4
#17 0xffffffff in QObject::event(QEvent*) () at /usr/lib/qt/lib/libQtCore.so.4
#18 0xffffffff in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/qt/lib/libQtGui.so.4
#19 0xffffffff in QApplication::notify(QObject*, QEvent*) () at /usr/lib/qt/lib/libQtGui.so.4
#20 0xffffffff in KApplication::notify(QObject*, QEvent*) () at /usr/lib/libkdeui.so.5
#21 0xffffffff in QCoreApplication::notifyInternal(QObject*, QEvent*) () at /usr/lib/qt/lib/libQtCore.so.4
#22 0xffffffff in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/qt/lib/libQtCore.so.4
#23 0xffffffff in QCoreApplication::sendPostedEvents(QObject*, int) () at /usr/lib/qt/lib/libQtCore.so.4
#24 0xffffffff in QCoreApplication::exec() () at /usr/lib/qt/lib/libQtCore.so.4
#25 0xffffffff in QApplication::exec() () at /usr/lib/qt/lib/libQtGui.so.4
#26 0x0805097e in  ()
#27 0xffffffff in __libc_start_main () at /lib/libc.so.6
#28 0x08050a76 in _start ()

Reported using DrKonqi