Rigth after boot on Kubuntu 15.04 i get a krunner crash. I cannot send a bug report from within the crash windows because ""krunner doesn't provide a bug report address" or something (rough translation). Anyway, below is what I get:

Application: krunner (krunner), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f25b7ae17c0 (LWP 1282))]

Thread 3 (Thread 0x7f25a2319700 (LWP 1283)):
#0  0x00007f25b44878dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f25b1ef6b72 in poll (__timeout=-1, __nfds=1, __fds=0x7f25a2318d00) at /usr/include/x86_64-linux-gnu/bits/poll2.h:46
#2  _xcb_conn_wait (c=c@entry=0x20e54a0, cond=cond@entry=0x20e54e0, vector=vector@entry=0x0, count=count@entry=0x0) at ../../src/xcb_conn.c:447
#3  0x00007f25b1ef864f in xcb_wait_for_event (c=0x20e54a0) at ../../src/xcb_in.c:622
#4  0x00007f25a4ea8099 in QXcbEventReader::run (this=0x20f3700) at qxcbconnection.cpp:1105
#5  0x00007f25b4b08b0e in QThreadPrivate::start (arg=0x20f3700) at thread/qthread_unix.cpp:337
#6  0x00007f25b41756aa in start_thread (arg=0x7f25a2319700) at pthread_create.c:333
#7  0x00007f25b4492eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f2598c39700 (LWP 1527)):
#0  0x00007f25b44878dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f25b3c56ebc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f25b3c56fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f25b4d9fc6c in QEventDispatcherGlib::processEvents (this=0x7f25940008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007f25b4d443e2 in QEventLoop::exec (this=this@entry=0x7f2598c38de0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f25b4b03b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f25b5cb0f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f25b4b08b0e in QThreadPrivate::start (arg=0x25116c0) at thread/qthread_unix.cpp:337
#8  0x00007f25b41756aa in start_thread (arg=0x7f2598c39700) at pthread_create.c:333
#9  0x00007f25b4492eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f25b7ae17c0 (LWP 1282)):
[KCrash Handler]
#6  0x00007f25a4ea01af in QXcbClipboard::requestor (this=0x2115780) at qxcbclipboard.cpp:481
#7  0x00007f25a4ea0e53 in QXcbClipboard::getSelection (this=0x2115780, selection=34487760, target=390, property=395, time=0) at qxcbclipboard.cpp:1004
#8  0x00007f25a4ea2818 in getDataInFormat (fmtAtom=<optimized out>, modeAtom=<optimized out>, this=<optimized out>) at qxcbclipboard.cpp:998
#9  QXcbClipboardMime::formats_sys (this=0x21268a0) at qxcbclipboard.cpp:97
#10 0x00007f25b50a138b in QInternalMimeData::formats (this=<optimized out>) at kernel/qdnd.cpp:207
#11 0x00007f25a4ea24f5 in QXcbClipboardMime::hasFormat_sys (this=<optimized out>, format=...) at qxcbclipboard.cpp:119
#12 0x00007f25b50a1116 in QInternalMimeData::hasFormat (this=this@entry=0x21268a0, mimeType=...) at kernel/qdnd.cpp:194
#13 0x00007f25b4d713e6 in QMimeData::hasText (this=0x21268a0) at kernel/qmimedata.cpp:405
#14 0x00007f25b71d70e8 in QQuickTextInput::q_canPasteChanged() () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#15 0x00007f25b72bf370 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#16 0x00007f25b4d779c9 in QMetaObject::activate (sender=0x2607e80, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=3, argv=argv@entry=0x0) at kernel/qobject.cpp:3716
#17 0x00007f25b4d78057 in QMetaObject::activate (sender=<optimized out>, m=m@entry=0x7f25b54e6e00 <QClipboard::staticMetaObject>, local_signal_index=local_signal_index@entry=3, argv=argv@entry=0x0) at kernel/qobject.cpp:3582
#18 0x00007f25b541b013 in QClipboard::dataChanged (this=<optimized out>) at .moc/moc_qclipboard.cpp:175
#19 0x00007f25b509e491 in QClipboard::emitChanged (this=0x2607e80, mode=mode@entry=QClipboard::Clipboard) at kernel/qclipboard.cpp:573
#20 0x00007f25b5086f43 in QPlatformClipboard::emitChanged (this=this@entry=0x2115780, mode=mode@entry=QClipboard::Clipboard) at kernel/qplatformclipboard.cpp:119
#21 0x00007f25a4ea10ac in QXcbClipboard::handleXFixesSelectionRequest (this=0x2115780, event=event@entry=0x7f259c003e30) at qxcbclipboard.cpp:747
#22 0x00007f25a4ea7358 in QXcbConnection::handleXcbEvent (this=this@entry=0x20e3dd0, event=event@entry=0x7f259c003e30) at qxcbconnection.cpp:957
#23 0x00007f25a4ea84bb in QXcbConnection::processXcbEvents (this=0x20e3dd0) at qxcbconnection.cpp:1303
#24 0x00007f25b4d7873a in QObject::event (this=0x20e3dd0, e=<optimized out>) at kernel/qobject.cpp:1245
#25 0x00007f25b752db2c in QApplicationPrivate::notify_helper (this=0x20c7560, receiver=0x20e3dd0, e=0x7f259c004b70) at kernel/qapplication.cpp:3720
#26 0x00007f25b7533000 in QApplication::notify (this=0x7ffea11ec7f0, receiver=0x20e3dd0, e=0x7f259c004b70) at kernel/qapplication.cpp:3503
#27 0x00007f25b4d46c2b in QCoreApplication::notifyInternal (this=0x7ffea11ec7f0, receiver=0x20e3dd0, event=event@entry=0x7f259c004b70) at kernel/qcoreapplication.cpp:935
#28 0x00007f25b4d48c9b in sendEvent (event=0x7f259c004b70, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:228
#29 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x20c5680) at kernel/qcoreapplication.cpp:1552
#30 0x00007f25b4d49298 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1410
#31 0x00007f25b4d9f843 in postEventSourceDispatch (s=0x21223b0) at kernel/qeventdispatcher_glib.cpp:271
#32 0x00007f25b3c56c3d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#33 0x00007f25b3c56f20 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#34 0x00007f25b3c56fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#35 0x00007f25b4d9fc57 in QEventDispatcherGlib::processEvents (this=0x2130ea0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#36 0x00007f25b4d443e2 in QEventLoop::exec (this=this@entry=0x7ffea11ec770, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#37 0x00007f25b4d4c02c in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1188
#38 0x00007f25b508b31c in QGuiApplication::exec () at kernel/qguiapplication.cpp:1510
#39 0x00007f25b75297a5 in QApplication::exec () at kernel/qapplication.cpp:2956
#40 0x0000000000407447 in main (argc=1, argv=<optimized out>) at ../../krunner/main.cpp:71