ufortunately this is still a bug:

Application: Dolphin (dolphin), signal: Segmentation fault
[KCrash Handler]
#6  0x00000000 in ?? ()
#7  0x00719246 in qDeleteAll<QList<KJob*>::const_iterator> (this=0xac19330, __in_chrg=<value optimized out>) at /usr/include/qt4/QtCore/qalgorithms.h:350
#8  qDeleteAll<QList<KJob*> > (this=0xac19330, __in_chrg=<value optimized out>) at /usr/include/qt4/QtCore/qalgorithms.h:358
#9  ~KCompositeJobPrivate (this=0xac19330, __in_chrg=<value optimized out>) at ../../kdecore/jobs/kcompositejob.cpp:29
#10 0x0020e22f in ~JobPrivate (this=0xac19330, __in_chrg=<value optimized out>) at ../../kio/kio/job_p.h:35
#11 ~FileCopyJobPrivate (this=0xac19330, __in_chrg=<value optimized out>) at ../../kio/kio/job.cpp:1656
#12 0x0071a2a4 in ~KJob (this=0xac07578, __in_chrg=<value optimized out>) at ../../kdecore/jobs/kjob.cpp:69
#13 0x00719118 in ~KCompositeJob (this=0xac07578, __in_chrg=<value optimized out>) at ../../kdecore/jobs/kcompositejob.cpp:44
#14 0x001fe1f8 in ~Job (this=0xac07578, __in_chrg=<value optimized out>) at ../../kio/kio/job.cpp:91
#15 0x001fe22d in ~FileCopyJob (this=0xac07578, __in_chrg=<value optimized out>) at ../../kio/kio/job.cpp:1811
#16 0x00b66215 in qDeleteInEventHandler (o=0xa6ed108) at kernel/qobject.cpp:3815
#17 0x00b6770b in QObject::event (this=0xac07578, e=0xa071fc8) at kernel/qobject.cpp:1094
#18 0x01483c34 in QApplicationPrivate::notify_helper (this=0x9cb8748, receiver=0xac07578, e=0xa071fc8) at kernel/qapplication.cpp:4056
#19 0x0148b35c in QApplication::notify (this=0xbff4dc8c, receiver=0xac07578, e=0xa071fc8) at kernel/qapplication.cpp:3603
#20 0x01158a4a in KApplication::notify (this=0xbff4dc8c, receiver=0xac07578, event=0xa071fc8) at ../../kdeui/kernel/kapplication.cpp:302
#21 0x00b577ab in QCoreApplication::notifyInternal (this=0xbff4dc8c, receiver=0xac07578, event=0xa071fc8) at kernel/qcoreapplication.cpp:610
#22 0x00b58392 in QCoreApplication::sendEvent (receiver=0x0, event_type=0, data=0x9c8d128) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#23 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x9c8d128) at kernel/qcoreapplication.cpp:1247
#24 0x00b5855d in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at kernel/qcoreapplication.cpp:1140
#25 0x00b824df in QCoreApplication::sendPostedEvents (s=0x9cb28f0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:218
#26 postEventSourceDispatch (s=0x9cb28f0) at kernel/qeventdispatcher_glib.cpp:210
#27 0x032e0bc8 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#28 0x032e4470 in ?? () from /usr/lib/libglib-2.0.so.0
#29 0x032e45a3 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#30 0x00b8210c in QEventDispatcherGlib::processEvents (this=0x9c8cd10, flags=...) at kernel/qeventdispatcher_glib.cpp:327
#31 0x015247a5 in QGuiEventDispatcherGlib::processEvents (this=0x9c8cd10, flags=...) at kernel/qguieventdispatcher_glib.cpp:202
#32 0x00b55d59 in QEventLoop::processEvents (this=0xbff4dbe4, flags=) at kernel/qeventloop.cpp:149
#33 0x00b561aa in QEventLoop::exec (this=0xbff4dbe4, flags=...) at kernel/qeventloop.cpp:201
#34 0x00b5861f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#35 0x01483ab7 in QApplication::exec () at kernel/qapplication.cpp:3525
#36 0x0807a4e5 in main (argc=5, argv=0xbff4de44) at ../../../../apps/dolphin/src/main.cpp:94


i use 

dolphin  4:4.2.96-0ubuntu1 0

now