Version:            (using KDE 4.1.3)
OS:                Linux
Installed from:    Ubuntu Packages

having wlanconnection and the wlanrouter was off I clicked on the desktop with the right mouse button and tried to configure the wallpaper. plasma tried to download pictures from kde-wallpapers.de and crashed. here the log:

Anwendung: Plasma-Arbeitsfläche (plasma), Signal SIGSEGV
[Thread debugging using libthread_db enabled]
[New Thread 0x7f10a05bf730 (LWP 6590)]
[New Thread 0x4224f950 (LWP 6725)]
[New Thread 0x41819950 (LWP 6592)]
[KCrash handler]
#5  QMap<QString, QString>::detach_helper (this=0x7fffa86f0558)
    at /usr/include/qt4/QtCore/qatomic_x86_64.h:117
#6  0x00007f109c880f80 in KNS::Entry::preview (this=<value optimized out>)
    at /build/buildd/kde4libs-4.1.3/knewstuff/knewstuff2/core/entry.cpp:175
#7  0x00007f109c8ae71b in KNS::ItemsModel::data (this=0x1b47960, 
    index=<value optimized out>, role=<value optimized out>)
    at /build/buildd/kde4libs-4.1.3/knewstuff/knewstuff2/ui/itemsmodel.cpp:82
#8  0x00007f109e0bfd23 in QSortFilterProxyModel::data ()
   from /usr/lib/libQtGui.so.4
#9  0x00007f109c8b0446 in KNS::ItemsViewDelegate::paint (this=0x232a330, 
    painter=0x7fffa86f0d10, option=@0x7fffa86f0a60, index=@0x1b257a0)
    at /usr/include/qt4/QtCore/qabstractitemmodel.h:367
#10 0x00007f109e06583b in QListView::paintEvent () from /usr/lib/libQtGui.so.4
#11 0x00007f109dc24114 in QWidget::event () from /usr/lib/libQtGui.so.4
#12 0x00007f109e0498fd in QAbstractItemView::viewportEvent ()
   from /usr/lib/libQtGui.so.4
#13 0x00007f109ee31038 in QCoreApplicationPrivate::sendThroughObjectEventFilters () from /usr/lib/libQtCore.so.4
#14 0x00007f109dbd1c0c in QApplicationPrivate::notify_helper ()
   from /usr/lib/libQtGui.so.4
#15 0x00007f109dbd99ba in QApplication::notify () from /usr/lib/libQtGui.so.4
#16 0x00007f109f78dfcb in KApplication::notify (this=0x15a83e0, 
    receiver=0x22394c0, event=0x7fffa86f1780)
    at /build/buildd/kde4libs-4.1.3/kdeui/kernel/kapplication.cpp:311
#17 0x00007f109ee31d61 in QCoreApplication::notifyInternal ()
   from /usr/lib/libQtCore.so.4
#18 0x00007f109dc22b4f in QWidgetPrivate::drawWidget ()
   from /usr/lib/libQtGui.so.4
#19 0x00007f109dc23232 in QWidgetPrivate::paintSiblingsRecursive ()
   from /usr/lib/libQtGui.so.4
#20 0x00007f109dc22808 in QWidgetPrivate::drawWidget ()
   from /usr/lib/libQtGui.so.4
#21 0x00007f109dc23232 in QWidgetPrivate::paintSiblingsRecursive ()
   from /usr/lib/libQtGui.so.4
#22 0x00007f109dc22808 in QWidgetPrivate::drawWidget ()
   from /usr/lib/libQtGui.so.4
#23 0x00007f109dc23232 in QWidgetPrivate::paintSiblingsRecursive ()
   from /usr/lib/libQtGui.so.4
#24 0x00007f109dc22808 in QWidgetPrivate::drawWidget ()
   from /usr/lib/libQtGui.so.4
#25 0x00007f109dd7c664 in ?? () from /usr/lib/libQtGui.so.4
#26 0x00007f109dd7cb17 in ?? () from /usr/lib/libQtGui.so.4
#27 0x00007f109dc23f35 in QWidget::event () from /usr/lib/libQtGui.so.4
#28 0x00007f109dbd1c3d in QApplicationPrivate::notify_helper ()
   from /usr/lib/libQtGui.so.4
#29 0x00007f109dbd99ba in QApplication::notify () from /usr/lib/libQtGui.so.4
#30 0x00007f109f78dfcb in KApplication::notify (this=0x15a83e0, 
    receiver=0x19f5c20, event=0x1c02000)
    at /build/buildd/kde4libs-4.1.3/kdeui/kernel/kapplication.cpp:311
#31 0x00007f109ee31d61 in QCoreApplication::notifyInternal ()
   from /usr/lib/libQtCore.so.4
#32 0x00007f109ee329fa in QCoreApplicationPrivate::sendPostedEvents ()
   from /usr/lib/libQtCore.so.4
#33 0x00007f109ee5a4d3 in ?? () from /usr/lib/libQtCore.so.4
#34 0x00007f10996afd3b in g_main_context_dispatch ()
   from /usr/lib/libglib-2.0.so.0
#35 0x00007f10996b350d in ?? () from /usr/lib/libglib-2.0.so.0
#36 0x00007f10996b36cb in g_main_context_iteration ()
   from /usr/lib/libglib-2.0.so.0
#37 0x00007f109ee5a15f in QEventDispatcherGlib::processEvents ()
   from /usr/lib/libQtCore.so.4
#38 0x00007f109dc63a6f in ?? () from /usr/lib/libQtGui.so.4
#39 0x00007f109ee30682 in QEventLoop::processEvents ()
   from /usr/lib/libQtCore.so.4
#40 0x00007f109ee3080d in QEventLoop::exec () from /usr/lib/libQtCore.so.4
#41 0x00007f109ee32cbd in QCoreApplication::exec ()
   from /usr/lib/libQtCore.so.4
#42 0x00007f10a02bbfe3 in kdemain () from /usr/lib/libkdeinit4_plasma.so
#43 0x00007f109ff4c466 in __libc_start_main () from /lib/libc.so.6
#44 0x0000000000400659 in _start ()
#0  0x00007f109ffd6621 in nanosleep () from /lib/libc.so.6

I hope this bugreport is ok for the developer. if not, plz say me why and i will do it better next time.

thx