This is probably the same as bug 194813. But we can't be sure until we get a complete backtrace:
If you can reproduce the crash at will, may you read http://techbase.kde.org/Development/Tutorials/Debugging/How_to_create_useful_crash_reports and post a complete backtrace here? You need to install the "kdenetwork4-debuginfo" package. Thanks

Here is the new bracktrace:

Aplicación: KGet (kget), señal SIGSEGV
[Current thread is 1 (Thread 0xb80aa780 (LWP 12797))]

Thread 1 (Thread 0xb80aa780 (LWP 12797)):
[KCrash Handler]
#6  0x04db4f70 in QObject::connect (sender=0x630065, signal=0x80a5d5f "2buttonClicked(int)", receiver=0x83e02a0, method=0x80a5d45 "1updateSelectionButtons()", type=Qt::AutoConnection)
    at kernel/qobject.cpp:2465
#7  0x0808da2a in QObject::connect (atype=<value optimized out>, amember=<value optimized out>, asignal=<value optimized out>, asender=<value optimized out>, this=<value optimized out>)
    at /usr/include/QtCore/qobject.h:308
#8  KGetLinkView::KGetLinkView(struct QWidget *) (atype=<value optimized out>, amember=<value optimized out>, asignal=<value optimized out>, asender=<value optimized out>, this=<value optimized out>)
    at /usr/src/debug/kdenetwork-4.2.4/kget/ui/linkview/kget_linkview.cpp:87
#9  0x0809133f in MainWindow::importLinks (this=0x82dfbe0, links=@0x83f4650) at /usr/src/debug/kdenetwork-4.2.4/kget/mainwindow.cpp:783
#10 0x08061b3f in KgetAdaptor::qt_metacall (this=0x84154e0, _c=QMetaObject::InvokeMetaMethod, _id=2, _a=0xbfabb67c) at /usr/src/debug/kdenetwork-4.2.4/i586-redhat-linux-gnu/kget/kgetadaptor.moc:107
#11 0x04fc8854 in QDBusConnectionPrivate::deliverCall (this=0x82c9788, object=0x84154e0, msg=@0x843cf10, metaTypes=@0xbfabb73c, slotIdx=6) at qdbusintegrator.cpp:891
#12 0x04fc99cd in QDBusConnectionPrivate::activateCall (this=0x82c9788, object=0x84154e0, flags=273, msg=@0x843cf10) at qdbusintegrator.cpp:796
#13 0x04fca294 in QDBusConnectionPrivate::activateObject (this=0x82c9788, node=@0x843cefc, msg=@0x843cf10, pathStartPos=5) at qdbusintegrator.cpp:1347
#14 0x04fca52a in QDBusActivateObjectEvent::placeMetaCall (this=0x843ced0) at qdbusintegrator.cpp:1464
#15 0x04db364e in QObject::event (this=0x82dfbe0, e=0x843ced0) at kernel/qobject.cpp:1111
#16 0x05fd7c61 in QWidget::event (this=0x82dfbe0, event=0x843ced0) at kernel/qwidget.cpp:7946
#17 0x063a3857 in QMainWindow::event (this=0x82dfbe0, event=0x843ced0) at widgets/qmainwindow.cpp:1399
#18 0x059fe224 in KMainWindow::event (this=0x82dfbe0, ev=0x843ced0) at /usr/src/debug/kdelibs-4.2.4/kdeui/widgets/kmainwindow.cpp:1094
#19 0x05a438bf in KXmlGuiWindow::event (this=0x82dfbe0, ev=0x843ced0) at /usr/src/debug/kdelibs-4.2.4/kdeui/xmlgui/kxmlguiwindow.cpp:131
#20 0x05f833b4 in QApplicationPrivate::notify_helper (this=0x82d77f0, receiver=0x82dfbe0, e=0x843ced0) at kernel/qapplication.cpp:4056
#21 0x05f8aa3e in QApplication::notify (this=0xbfabc1c0, receiver=0x82dfbe0, e=0x843ced0) at kernel/qapplication.cpp:4021
#22 0x059203ca in KApplication::notify (this=0xbfabc1c0, receiver=0x82dfbe0, event=0x843ced0) at /usr/src/debug/kdelibs-4.2.4/kdeui/kernel/kapplication.cpp:307
#23 0x04da358b in QCoreApplication::notifyInternal (this=0xbfabc1c0, receiver=0x82dfbe0, event=0x843ced0) at kernel/qcoreapplication.cpp:610
#24 0x04da41a8 in QCoreApplication::sendEvent (event=<value optimized out>, receiver=<value optimized out>) at kernel/qcoreapplication.h:213
#25 QCoreApplicationPrivate::sendPostedEvents (event=<value optimized out>, receiver=<value optimized out>) at kernel/qcoreapplication.cpp:1247
#26 0x04da437d in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at kernel/qcoreapplication.cpp:1140
#27 0x04dce3ef in QCoreApplication::sendPostedEvents () at kernel/qcoreapplication.h:218
#28 postEventSourceDispatch () at kernel/qeventdispatcher_glib.cpp:210
#29 0x00a93cf8 in g_main_dispatch (context=<value optimized out>) at gmain.c:1824
#30 IA__g_main_context_dispatch (context=<value optimized out>) at gmain.c:2377
#31 0x00a97370 in g_main_context_iterate (context=0x82d2870, block=<value optimized out>, dispatch=1, self=0x82d9268) at gmain.c:2455
#32 0x00a974a3 in IA__g_main_context_iteration (context=0x82d2870, may_block=1) at gmain.c:2518
#33 0x04dce01c in QEventDispatcherGlib::processEvents (this=0x82b70e0, flags={i = 36}) at kernel/qeventdispatcher_glib.cpp:327
#34 0x06022445 in QGuiEventDispatcherGlib::processEvents (this=0x82b70e0, flags={i = 36}) at kernel/qguieventdispatcher_glib.cpp:202
#35 0x04da1b79 in QEventLoop::processEvents (this=0xbfabc134, flags={i = 36}) at kernel/qeventloop.cpp:149
#36 0x04da1fca in QEventLoop::exec (this=0xbfabc134, flags={i = 0}) at kernel/qeventloop.cpp:201
#37 0x04da443f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#38 0x05f83237 in QApplication::exec () at kernel/qapplication.cpp:3525
#39 0x080998e8 in main (argc=1, argv=0xbfabc3d4) at /usr/src/debug/kdenetwork-4.2.4/kget/main.cpp:153

Indeed, this is the same as bug 194813. Merging. Thanks

*** This bug has been marked as a duplicate of bug 194813 ***