Version:           0.0 (using KDE KDE 4.0.0)
Installed from:    Debian testing/unstable Packages
OS:                Linux

I have my KDE Desktop installed from Debian Experimental repository. I've installed all the packages created except kdeedu and kdegames. I've also installed koffice beta 6 from the same repository.
Many times using the desktop Plasma desappear leaving black its part of the screen. I run Konsole and type 'plasma' when it occour again in konsole I get 'More than max services added.  Removing "xxxx.desktop" from queue.
ASSERT: "d" in file /usr/include/ksharedptr.h, line 114'.
When I launch konqueror for sailing the internet plasma crashes with the SIGABRT signal and I have to launch plasma again with konsole. Other form to reproduce it is launching synaptic as normal user.

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Backtraces

Using host libthread_db library "/lib/i686/cmov/libthread_db.so.1".
[Thread debugging using libthread_db enabled]
[New Thread 0xb5978a90 (LWP 8515)]
[New Thread 0xb3c8fb90 (LWP 8516)]
[KCrash handler]
#5  0xffffe410 in __kernel_vsyscall ()
#6  0xb7d98eb5 in raise () from /lib/i686/cmov/libc.so.6
#7  0xb7d9a831 in abort () from /lib/i686/cmov/libc.so.6
#8  0xb7aefa35 in qt_message_output (msgType=QtFatalMsg, 
    buf=0xbfdb80bc "ASSERT: \"d\" in file /usr/include/ksharedptr.h, line 114")
    at global/qglobal.cpp:2160
#9  0xb7aefae9 in qFatal (msg=0xb7bdcb64 "ASSERT: \"%s\" in file %s, line %d")
    at global/qglobal.cpp:2392
#10 0xb7aefc75 in qt_assert (assertion=0xb2819ec6 "d", 
    file=0xb2819821 "/usr/include/ksharedptr.h", line=114)
    at global/qglobal.cpp:1917
#11 0xb27fba44 in Kickoff::RecentlyUsedModel::recentApplicationRemoved (
    this=0x82f18a0, service=@0xbfdba154) at /usr/include/ksharedptr.h:114
#12 0xb27fd3f7 in Kickoff::RecentlyUsedModel::qt_metacall (this=0x82f18a0, 
    _c=QMetaObject::InvokeMetaMethod, _id=5, _a=0xbfdba64c)
    at /tmp/buildd/kdebase-workspace-4.0.0/obj-i486-linux-gnu/plasma/applets/kickoff/recentlyusedmodel.moc:82
#13 0xb7bbde0a in QMetaObject::activate (sender=0x82f0214, 
    from_signal_index=5, to_signal_index=5, argv=0xbfdba64c)
    at kernel/qobject.cpp:3087
#14 0xb7bbe9c2 in QMetaObject::activate (sender=0x82f0214, m=0xb281d374, 
    local_signal_index=1, argv=0xbfdba64c) at kernel/qobject.cpp:3149
#15 0xb27f66c3 in Kickoff::RecentApplications::applicationRemoved (
    this=0x82f0214, _t1=@0xbfdba6e4)
    at /tmp/buildd/kdebase-workspace-4.0.0/obj-i486-linux-gnu/plasma/applets/kickoff/recentapplications.moc:96
#16 0xb27f9097 in Kickoff::RecentApplications::Private::addEntry (
    this=0x82f0208, id=@0xbfdba740, info=@0xbfdba740)
    at /tmp/buildd/kdebase-workspace-4.0.0/plasma/applets/kickoff/core/recentapplications.cpp:104
#17 0xb27f6d81 in Kickoff::RecentApplications::add (this=0x82f0214, 
    service=@0xbfdba7cc)
    at /tmp/buildd/kdebase-workspace-4.0.0/plasma/applets/kickoff/core/recentapplications.cpp:181
#18 0xb2806d8b in Kickoff::ServiceItemHandler::openUrl (this=0x81f19f0, 
    url=@0xbfdba868)
    at /tmp/buildd/kdebase-workspace-4.0.0/plasma/applets/kickoff/core/itemhandlers.cpp:53
#19 0xb2805ad8 in Kickoff::UrlItemLauncher::Private::openUrl (
    urlString=@0xbfdba908)
    at /tmp/buildd/kdebase-workspace-4.0.0/plasma/applets/kickoff/core/urlitemlauncher.cpp:79
#20 0xb280512b in Kickoff::UrlItemLauncher::openItem (this=0x818fa68, 
    index=@0xbfdba958)
    at /tmp/buildd/kdebase-workspace-4.0.0/plasma/applets/kickoff/core/urlitemlauncher.cpp:121
#21 0xb280ff27 in Kickoff::Launcher::eventFilter (this=0x822b818, 
    object=0x8300160, event=0xbfdbadcc)
    at /tmp/buildd/kdebase-workspace-4.0.0/plasma/applets/kickoff/ui/launcher.cpp:400
#22 0xb6e331d2 in QApplicationPrivate::notify_helper (this=0x80789e8, 
    receiver=0x8300160, e=0xbfdbadcc) at kernel/qapplication.cpp:3548
#23 0xb6e37481 in QApplication::notify (this=0x805b3e0, receiver=0x8300160, 
    e=0xbfdbadcc) at kernel/qapplication.cpp:3255
#24 0xb7707cdd in KApplication::notify (this=0x805b3e0, receiver=0x8300160, 
    event=0xbfdbadcc)
    at /tmp/buildd/kde4libs-4.0.0/kdeui/kernel/kapplication.cpp:314
#25 0xb7baaffb in QCoreApplication::notifyInternal (this=0x805b3e0, 
    receiver=0x8300160, event=0xbfdbadcc) at kernel/qcoreapplication.cpp:530
#26 0xb6e8f466 in QETWidget::translateMouseEvent (this=0x8300160, 
    event=0xbfdbb17c)
    at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:203
#27 0xb6e8ea0a in QApplication::x11ProcessEvent (this=0x805b3e0, 
    event=0xbfdbb17c) at kernel/qapplication_x11.cpp:2918
#28 0xb6eb32f6 in x11EventSourceDispatch (s=0x807b7c8, callback=0, 
    user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:135
#29 0xb66df216 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#30 0xb66e25a3 in ?? () from /usr/lib/libglib-2.0.so.0
#31 0x0807aa98 in ?? ()
#32 0x00000000 in ?? ()
#0  0xffffe410 in __kernel_vsyscall ()