Version:            (using KDE 4.3.2)
OS:                Linux
Installed from:    Debian testing/unstable Packages

My kopete crashes whenever I close a history window.
Looks like the bug was introduced by a recent upgrade of the system, when 'kdepimlibs' and 'kdelibs5' packages were updated from 4.3.1 to 4.3.2.

Here is the backtrace:
Application: Kopete (kopete), signal: Segmentation fault
The current source language is "auto; currently c".
[KCrash Handler]
#5  QWidget::hide (this=0x27d0420, __in_chrg=<value optimized out>, __vtt_parm=<value optimized out>) at /usr/include/qt4/QtGui/qwidget.h:477
#6  ~KHTMLPart (this=0x27d0420, __in_chrg=<value optimized out>, __vtt_parm=<value optimized out>) at ../../khtml/khtml_part.cpp:612
#7  0x00007f1181dfd527 in KParts::Part::slotWidgetDestroyed (this=0x27d0420) at ../../kparts/part.cpp:354
#8  0x00007f1181dfd618 in KParts::Part::qt_metacall (this=0x27d0420, _c=QMetaObject::InvokeMetaMethod, _id=0, _a=0x7fff311c3700) at ./part.moc:76
#9  0x00007f1181dfd665 in KParts::ReadOnlyPart::qt_metacall (this=0x0, _c=4294967295, _id=6528513, _a=0x639d40) at ./part.moc:154
#10 0x00007f1178d65e1d in KHTMLPart::qt_metacall (this=0x0, _c=4294967295, _id=6528513, _a=0x639d40) at ./khtml_part.moc:246
#11 0x00007f1188649df2 in QMetaObject::activate (sender=0x28e1f90, from_signal_index=<value optimized out>, to_signal_index=1, argv=0x639d40) at kernel/qobject.cpp:3112
#12 0x00007f118864a284 in QObject::destroyed (this=0x0, _t1=0x28e1f90) at .moc/release-shared/moc_qobject.cpp:143
#13 0x00007f118864b0de in ~QObject (this=0x28e1f90, __in_chrg=<value optimized out>) at kernel/qobject.cpp:757
#14 0x00007f1187af9707 in ~QWidget (this=0x28e1f90, __in_chrg=<value optimized out>) at kernel/qwidget.cpp:1380
#15 0x00007f1188642fe1 in QObjectPrivate::deleteChildren (this=0x27ab0b0) at kernel/qobject.cpp:1846
#16 0x00007f1187af9562 in ~QWidget (this=0x29a91b0, __in_chrg=<value optimized out>) at kernel/qwidget.cpp:1367
#17 0x00007f1188642fe1 in QObjectPrivate::deleteChildren (this=0x27985d0) at kernel/qobject.cpp:1846
#18 0x00007f1187af9ed2 in ~QWidget (this=0x27985a0, __in_chrg=<value optimized out>) at kernel/qwidget.cpp:1367
#19 0x00007f1187ec55e0 in ~QSplitter (this=0x27985a0, __in_chrg=<value optimized out>) at widgets/qsplitter.cpp:1008
#20 0x00007f1188642fe1 in QObjectPrivate::deleteChildren (this=0x29679b0) at kernel/qobject.cpp:1846
#21 0x00007f1187af9562 in ~QWidget (this=0x2967980, __in_chrg=<value optimized out>) at kernel/qwidget.cpp:1367
#22 0x00007f1188642fe1 in QObjectPrivate::deleteChildren (this=0x2967d90) at kernel/qobject.cpp:1846
#23 0x00007f1187af9ed2 in ~QWidget (this=0x29cd9b0, __in_chrg=<value optimized out>) at kernel/qwidget.cpp:1367
#24 0x00007f1177fcf227 in ~HistoryDialog (this=0x29cd9b0, __in_chrg=<value optimized out>) at ../../../../kopete/plugins/history/historydialog.cpp:187
#25 0x00007f11886446e5 in QObject::event (this=0x29cd9b0, e=0xffffffff) at kernel/qobject.cpp:1093
#26 0x00007f1187afdbed in QWidget::event (this=0x29cd9b0, event=0x2751aa0) at kernel/qwidget.cpp:7951How to reproduce
#27 0x00007f1187aae01d in QApplicationPrivate::notify_helper (this=0x23703d0, receiver=0x29cd9b0, e=0x2751aa0) at kernel/qapplication.cpp:4065
#28 0x00007f1187ab607a in QApplication::notify (this=0x7fff311c46a0, receiver=0x29cd9b0, e=0x2751aa0) at kernel/qapplication.cpp:4030
#29 0x00007f11892490db in KApplication::notify (this=0x7fff311c46a0, receiver=0x29cd9b0, event=0x2751aa0) at ../../kdeui/kernel/kapplication.cpp:302
#30 0x00007f1188634c9c in QCoreApplication::notifyInternal (this=0x7fff311c46a0, receiver=0x29cd9b0, event=0x2751aa0) at kernel/qcoreapplication.cpp:610
#31 0x00007f11886358e4 in QCoreApplication::sendEvent (receiver=0x0, event_type=0, data=0x234c180) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#32 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x234c180) at kernel/qcoreapplication.cpp:1247
#33 0x00007f118865d7d3 in QCoreApplication::sendPostedEvents (s=<value optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:218
#34 postEventSourceDispatch (s=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:276
#35 0x00007f11831c912a in g_main_dispatch (context=0x23729f0) at /tmp/buildd/glib2.0-2.22.2/glib/gmain.c:1960
#36 IA__g_main_context_dispatch (context=0x23729f0) at /tmp/buildd/glib2.0-2.22.2/glib/gmain.c:2513
#37 0x00007f11831cc988 in g_main_context_iterate (context=0x23729f0, block=1, dispatch=1, self=<value optimized out>) at /tmp/buildd/glib2.0-2.22.2/glib/gmain.c:2591
#38 0x00007f11831ccb3c in IA__g_main_context_iteration (context=0x23729f0, may_block=1) at /tmp/buildd/glib2.0-2.22.2/glib/gmain.c:2654
#39 0x00007f118865d39c in QEventDispatcherGlib::processEvents (this=0x234bde0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:407
#40 0x00007f1187b44f1f in QGuiEventDispatcherGlib::processEvents (this=0x0, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#41 0x00007f1188633562 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#42 0x00007f1188633934 in QEventLoop::exec (this=0x7fff311c4610, flags=...) at kernel/qeventloop.cpp:201
#43 0x00007f1188635ba4 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#44 0x00000000004155e8 in main (argc=1, argv=0x7fff311c54d8) at ../../../kopete/kopete/main.cpp:104