Version:            (using KDE 4.2.2)
OS:                Linux
Installed from:    SuSE RPMs

Plasma crash when I drag and drop item in recent tab in Kickoff menu.

Step by step:
1- open kickoff menu.
2- go to recent tab.
3- click and drag any item there.
4- drop it and plasma will crash.

I use Qt 4.5.1.

Backtraces:

تطبيق: سطح بلازما (plasma), signal SIGSEGV
[?1034h[Thread debugging using libthread_db enabled]
[Current thread is 1 (Thread 0xb49ba700 (LWP 3701))]

Thread 3 (Thread 0xa85ffb90 (LWP 3711)):
#0  0xffffe430 in __kernel_vsyscall ()
#1  0xb6487c35 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#2  0xb64e7702 in QWaitCondition::wait (this=0x82c46e0, mutex=0x82c46dc, time=4294967295) at thread/qwaitcondition_unix.cpp:87
#3  0xb79b92d2 in QHostInfoAgent::run (this=0x82c46d0) at kernel/qhostinfo.cpp:260
#4  0xb64e66f2 in QThreadPrivate::start (arg=0x82c46d0) at thread/qthread_unix.cpp:188
#5  0xb64841b5 in start_thread () from /lib/libpthread.so.0
#6  0xb62c63be in clone () from /lib/libc.so.6

Thread 2 (Thread 0xa67d3b90 (LWP 3732)):
#0  0xffffe430 in __kernel_vsyscall ()
#1  0xb6487c35 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#2  0xb64e7702 in QWaitCondition::wait (this=0x82b2220, mutex=0x82b221c, time=4294967295) at thread/qwaitcondition_unix.cpp:87
#3  0xa9164d6a in RenderThread::run (this=0x82b2214) at /usr/src/debug/kdebase-workspace-4.2.2/plasma/wallpapers/image/renderthread.cpp:91
#4  0xb64e66f2 in QThreadPrivate::start (arg=0x82b2214) at thread/qthread_unix.cpp:188
#5  0xb64841b5 in start_thread () from /lib/libpthread.so.0
#6  0xb62c63be in clone () from /lib/libc.so.6

Thread 1 (Thread 0xb49ba700 (LWP 3701)):
[KCrash Handler]
#6  QAbstractItemModel::decodeData (this=0x85002a0, row=0, column=0, parent=@0xbfa290e4, stream=@0xbfa29074) at ../../src/corelib/thread/qbasicatomic.h:87
#7  0xb65d42b4 in QAbstractItemModel::dropMimeData (this=0x85002a0, data=0x87c5ca0, action=Qt::MoveAction, row=0, column=0, parent=@0xbfa290e4) at kernel/qabstractitemmodel.cpp:1517
#8  0xb6d90871 in QAbstractItemView::dropEvent (this=0x8506230, event=0xbfa2985c) at itemviews/qabstractitemview.cpp:1849
#9  0xa91ecfec in Kickoff::UrlItemView::dropEvent (this=0x8506230, event=0xbfa2985c) at /usr/src/debug/kdebase-workspace-4.2.2/plasma/applets/kickoff/ui/urlitemview.cpp:632
#10 0xb68ba031 in QWidget::event (this=0x8506230, event=0xbfa2985c) at kernel/qwidget.cpp:7717
#11 0xb6c4a883 in QFrame::event (this=0x8506230, e=0xbfa2985c) at widgets/qframe.cpp:559
#12 0xb6ceaabf in QAbstractScrollArea::viewportEvent (this=0x8506230, e=0x74696f6f) at widgets/qabstractscrollarea.cpp:962
#13 0xb6d9cf47 in QAbstractItemView::viewportEvent (this=0x8506230, event=0xbfa2985c) at itemviews/qabstractitemview.cpp:1476
#14 0xb6ced0c5 in QAbstractScrollAreaFilter::eventFilter (this=0x8503498, o=0x8504958, e=0xbfa2985c) at widgets/qabstractscrollarea_p.h:100
#15 0xb65d9cea in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=0x806e678, receiver=0x8504958, event=0xbfa2985c) at kernel/qcoreapplication.cpp:726
#16 0xb686383a in QApplicationPrivate::notify_helper (this=0x806e678, receiver=0x8504958, e=0xbfa2985c) at kernel/qapplication.cpp:4054
#17 0xb686c171 in QApplication::notify (this=0x806aba8, receiver=0x8504958, e=0xbfa2985c) at kernel/qapplication.cpp:4011
#18 0xb76f3ded in KApplication::notify (this=0x806aba8, receiver=0x8504958, event=0xbfa2985c) at /usr/src/debug/kdelibs-4.2.2/kdeui/kernel/kapplication.cpp:307
#19 0xb65daadb in QCoreApplication::notifyInternal (this=0x806aba8, receiver=0x8504958, event=0xbfa2985c) at kernel/qcoreapplication.cpp:610
#20 0xb68e8bcd in QX11Data::xdndHandleDrop (this=0x8071a00, xe=0xbfa29958, passive=false) at ../../src/corelib/kernel/qcoreapplication.h:213
#21 0xb68ed893 in QDragManager::drop (this=0x86aae50) at kernel/qdnd_x11.cpp:1709
#22 0xb68eda56 in QDragManager::eventFilter (this=0x86aae50, o=0x9ce35f0, e=0xbfa29df8) at kernel/qdnd_x11.cpp:1302
#23 0xb65d9dac in QCoreApplicationPrivate::sendThroughApplicationEventFilters (this=0x806e678, receiver=0x9ce35f0, event=0xbfa29df8) at kernel/qcoreapplication.cpp:707
#24 0xb68637d3 in QApplicationPrivate::notify_helper (this=0x806e678, receiver=0x9ce35f0, e=0xbfa29df8) at kernel/qapplication.cpp:4033
#25 0xb686c4d1 in QApplication::notify (this=0x806aba8, receiver=0x9ce35f0, e=0xbfa29df8) at kernel/qapplication.cpp:3760
#26 0xb76f3ded in KApplication::notify (this=0x806aba8, receiver=0x9ce35f0, event=0xbfa29df8) at /usr/src/debug/kdelibs-4.2.2/kdeui/kernel/kapplication.cpp:307
#27 0xb65daadb in QCoreApplication::notifyInternal (this=0x806aba8, receiver=0x9ce35f0, event=0xbfa29df8) at kernel/qcoreapplication.cpp:610
#28 0xb686b53e in QApplicationPrivate::sendMouseEvent (receiver=0x9ce35f0, event=0xbfa29df8, alienWidget=0x0, nativeWidget=0x9ce35f0, buttonDown=0xb70caa40, lastMouseReceiver=@0xb70caa44)
    at ../../src/corelib/kernel/qcoreapplication.h:216
#29 0xb68db556 in QETWidget::translateMouseEvent (this=0x9ce35f0, event=0xbfa2b48c) at kernel/qapplication_x11.cpp:4452
#30 0xb68da92d in QApplication::x11ProcessEvent (this=0x806aba8, event=0xbfa2b48c) at kernel/qapplication_x11.cpp:3448
#31 0xb69042aa in x11EventSourceDispatch (s=0x8071158, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#32 0xb4e309c8 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#33 0xb4e34083 in ?? () from /usr/lib/libglib-2.0.so.0
#34 0xb4e34241 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#35 0xb6606558 in QEventDispatcherGlib::processEvents (this=0x8052278, flags={i = -1079855544}) at kernel/qeventdispatcher_glib.cpp:327
#36 0xb69039a5 in QGuiEventDispatcherGlib::processEvents (this=0x8052278, flags={i = -1079855496}) at kernel/qguieventdispatcher_glib.cpp:202
#37 0xb65d90fa in QEventLoop::processEvents (this=0x813fff8, flags={i = -1079855432}) at kernel/qeventloop.cpp:149
#38 0xb65d9542 in QEventLoop::exec (this=0x813fff8, flags={i = -1079855320}) at kernel/qeventloop.cpp:201
#39 0xb68ed25b in QDragManager::drag (this=0x86aae50, o=0x9c87990) at kernel/qdnd_x11.cpp:1969
#40 0xb6876efa in QDrag::exec (this=0x9c87990, supportedActions={i = -1079855068}, defaultDropAction=Qt::IgnoreAction) at kernel/qdrag.cpp:282
#41 0xb6d9b49c in QAbstractItemView::startDrag (this=0x8506230, supportedActions={i = -1079854956}) at itemviews/qabstractitemview.cpp:3205
#42 0xa91ed32a in Kickoff::UrlItemView::startDrag (this=0x8506230, supportedActions={i = -1079854684}) at /usr/src/debug/kdebase-workspace-4.2.2/plasma/applets/kickoff/ui/urlitemview.cpp:627
#43 0xb6d983cd in QAbstractItemView::mouseMoveEvent (this=0x8506230, event=0xbfa2c1d8) at itemviews/qabstractitemview.cpp:1552
#44 0xa91ee85f in Kickoff::UrlItemView::mouseMoveEvent (this=0x8506230, event=0xbfa2c1d8) at /usr/src/debug/kdebase-workspace-4.2.2/plasma/applets/kickoff/ui/urlitemview.cpp:524
#45 0xb68ba2bd in QWidget::event (this=0x8506230, event=0xbfa2c1d8) at kernel/qwidget.cpp:7520
#46 0xb6c4a883 in QFrame::event (this=0x8506230, e=0xbfa2c1d8) at widgets/qframe.cpp:559
#47 0xb6ceaabf in QAbstractScrollArea::viewportEvent (this=0x8506230, e=0x74696f6f) at widgets/qabstractscrollarea.cpp:962
#48 0xb6d9cf47 in QAbstractItemView::viewportEvent (this=0x8506230, event=0xbfa2c1d8) at itemviews/qabstractitemview.cpp:1476
#49 0xb6ced0c5 in QAbstractScrollAreaFilter::eventFilter (this=0x8503498, o=0x8504958, e=0xbfa2c1d8) at widgets/qabstractscrollarea_p.h:100
#50 0xb65d9cea in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=0x806e678, receiver=0x8504958, event=0xbfa2c1d8) at kernel/qcoreapplication.cpp:726
#51 0xb686383a in QApplicationPrivate::notify_helper (this=0x806e678, receiver=0x8504958, e=0xbfa2c1d8) at kernel/qapplication.cpp:4054
#52 0xb686c4d1 in QApplication::notify (this=0x806aba8, receiver=0x8504958, e=0xbfa2c1d8) at kernel/qapplication.cpp:3760
#53 0xb76f3ded in KApplication::notify (this=0x806aba8, receiver=0x8504958, event=0xbfa2c1d8) at /usr/src/debug/kdelibs-4.2.2/kdeui/kernel/kapplication.cpp:307
#54 0xb65daadb in QCoreApplication::notifyInternal (this=0x806aba8, receiver=0x8504958, event=0xbfa2c1d8) at kernel/qcoreapplication.cpp:610
#55 0xb686b53e in QApplicationPrivate::sendMouseEvent (receiver=0x8504958, event=0xbfa2c1d8, alienWidget=0x8504958, nativeWidget=0x8512888, buttonDown=0xb70caa40, lastMouseReceiver=@0xb70caa44)
    at ../../src/corelib/kernel/qcoreapplication.h:216
#56 0xb68db556 in QETWidget::translateMouseEvent (this=0x8512888, event=0xbfa2d86c) at kernel/qapplication_x11.cpp:4452
#57 0xb68da92d in QApplication::x11ProcessEvent (this=0x806aba8, event=0xbfa2d86c) at kernel/qapplication_x11.cpp:3448
#58 0xb69042aa in x11EventSourceDispatch (s=0x8071158, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#59 0xb4e309c8 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#60 0xb4e34083 in ?? () from /usr/lib/libglib-2.0.so.0
#61 0xb4e34241 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#62 0xb6606558 in QEventDispatcherGlib::processEvents (this=0x8052278, flags={i = -1079846360}) at kernel/qeventdispatcher_glib.cpp:327
#63 0xb69039a5 in QGuiEventDispatcherGlib::processEvents (this=0x8052278, flags={i = -1079846312}) at kernel/qguieventdispatcher_glib.cpp:202
#64 0xb65d90fa in QEventLoop::processEvents (this=0xbfa2dad0, flags={i = -1079846248}) at kernel/qeventloop.cpp:149
#65 0xb65d9542 in QEventLoop::exec (this=0xbfa2dad0, flags={i = -1079846184}) at kernel/qeventloop.cpp:201
#66 0xb65db9e9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#67 0xb68636d7 in QApplication::exec () at kernel/qapplication.cpp:3527
#68 0xb7faedb6 in kdemain (argc=1, argv=0xbfa2dc84) at /usr/src/debug/kdebase-workspace-4.2.2/plasma/shells/desktop/main.cpp:54
#69 0x08048782 in main (argc=147225352, argv=0xb66d1ff4) at /usr/src/debug/kdebase-workspace-4.2.2/build/plasma/shells/desktop/plasma_qgv_dummy.cpp:3