Application: kile (2.0.85)
KDE Platform Version: 4.4.2 (KDE 4.4.2)
Qt Version: 4.6.2
Operating System: Linux 2.6.32-25-generic x86_64
Distribution: Ubuntu 10.04.1 LTS

-- Information about the crash:
I selected a large block of text in Kile beta 4, and pressed the backspace key.  Kile crashed less than 1 second after I did this.

 -- Backtrace:
Application: Kile (kile), signal: Segmentation fault
[KCrash Handler]
#5  KateLineLayout::viewLineCount (this=0x0) at ../../kate/render/katelinelayout.cpp:173
#6  0x00007f2e9ccc5cdf in KateLayoutCache::lastViewLine (this=<value optimized out>, realLine=476) at ../../kate/render/katelayoutcache.cpp:469
#7  0x00007f2e9cd28bf1 in KateViewInternal::viewLineOffset (this=0x2b3f1a0, virtualCursor=..., offset=29, keepX=<value optimized out>) at ../../kate/view/kateviewinternal.cpp:1359
#8  0x00007f2e9cd2b852 in KateViewInternal::makeVisible (this=0x2b3f1a0, c=..., endCol=0, force=false, center=<value optimized out>, calledExternally=false)
    at ../../kate/view/kateviewinternal.cpp:666
#9  0x00007f2e9cd2c009 in KateViewInternal::updateCursor (this=0x2b3f1a0, newCursor=<value optimized out>, force=<value optimized out>, center=false, calledExternally=<value optimized out>)
    at ../../kate/view/kateviewinternal.cpp:1914
#10 0x00007f2e9cd2cc39 in KateViewInternal::editEnd (this=0x2b3f1a0, editTagLineStart=<value optimized out>, editTagLineEnd=<value optimized out>, tagFrom=<value optimized out>)
    at ../../kate/view/kateviewinternal.cpp:3399
#11 0x00007f2e9cc84d11 in KateDocument::editEnd (this=0x21dc3c0) at ../../kate/document/katedocument.cpp:977
#12 0x00007f2e9cd174ca in KateView::removeSelectedText (this=0x2b35b00) at ../../kate/view/kateview.cpp:1774
#13 0x00007f2e9cc8d76e in KateDocument::backspace (this=0x21dc3c0, view=0x2b35b00, c=...) at ../../kate/document/katedocument.cpp:2830
#14 0x00007f2e9cd12a5c in KateView::backspace (this=0x2b35b00) at ../../kate/view/kateview.cpp:2295
#15 0x00007f2e9cd17bbd in KateView::qt_metacall (this=0x2b35b00, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7ffffe9abbe0) at ./kateview.moc:373
#16 0x00007f2eb1c95e3f in QMetaObject::activate (sender=0x2c32720, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x1) at kernel/qobject.cpp:3293
#17 0x00007f2eb25f1032 in QAction::triggered (this=0x0, _t1=false) at .moc/release-shared/moc_qaction.cpp:263
#18 0x00007f2eb25f30ab in QAction::activate (this=0x2c32720, event=<value optimized out>) at kernel/qaction.cpp:1255
#19 0x00007f2eb25f49b7 in QAction::event (this=0x0, e=<value optimized out>) at kernel/qaction.cpp:1181
#20 0x00007f2eb3487f3d in KAction::event(QEvent*) () from /usr/lib/libkdeui.so.5
#21 0x00007f2eb25f722c in QApplicationPrivate::notify_helper (this=0x14b34a0, receiver=0x2c32720, e=0x7ffffe9ac250) at kernel/qapplication.cpp:4300
#22 0x00007f2eb25fd6fb in QApplication::notify (this=0x7ffffe9ad800, receiver=0x2c32720, e=0x7ffffe9ac250) at kernel/qapplication.cpp:4183
#23 0x00007f2eb355d526 in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#24 0x00007f2eb1c8306c in QCoreApplication::notifyInternal (this=0x7ffffe9ad800, receiver=0x2c32720, event=0x7ffffe9ac250) at kernel/qcoreapplication.cpp:704
#25 0x00007f2eb2632e86 in QCoreApplication::sendEvent (this=<value optimized out>, e=0x7ffffe9ac850) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#26 QShortcutMap::dispatchEvent (this=<value optimized out>, e=0x7ffffe9ac850) at kernel/qshortcutmap.cpp:879
#27 0x00007f2eb2634c97 in QShortcutMap::tryShortcutEvent (this=0x14b35c8, o=<value optimized out>, e=0x7ffffe9ac850) at kernel/qshortcutmap.cpp:364
#28 0x00007f2eb25ff268 in QApplication::notify (this=0x7ffffe9ad800, receiver=0x2b3f1a0, e=0x7ffffe9ac850) at kernel/qapplication.cpp:3746
#29 0x00007f2eb355d526 in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#30 0x00007f2eb1c8306c in QCoreApplication::notifyInternal (this=0x7ffffe9ad800, receiver=0x2b3f1a0, event=0x7ffffe9ac850) at kernel/qcoreapplication.cpp:704
#31 0x00007f2eb26a216a in QKeyMapper::sendKeyEvent (keyWidget=0x2b3f1a0, grab=<value optimized out>, type=QEvent::KeyPress, code=16777219, modifiers=<value optimized out>, text=..., 
    autorepeat=false, count=1, nativeScanCode=22, nativeVirtualKey=65288, nativeModifiers=0) at kernel/qkeymapper_x11.cpp:1861
#32 0x00007f2eb26a46f0 in QKeyMapperPrivate::translateKeyEvent (this=0x14eee20, keyWidget=0x2b3f1a0, event=<value optimized out>, grab=176) at kernel/qkeymapper_x11.cpp:1831
#33 0x00007f2eb267b904 in QApplication::x11ProcessEvent (this=<value optimized out>, event=0x7ffffe9ad420) at kernel/qapplication_x11.cpp:3394
#34 0x00007f2eb26a7882 in x11EventSourceDispatch (s=0x14b6cf0, callback=<value optimized out>, user_data=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:146
#35 0x00007f2eadcb58c2 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#36 0x00007f2eadcb9748 in ?? () from /lib/libglib-2.0.so.0
#37 0x00007f2eadcb98fc in g_main_context_iteration () from /lib/libglib-2.0.so.0
#38 0x00007f2eb1cac513 in QEventDispatcherGlib::processEvents (this=0x148e1a0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:412
#39 0x00007f2eb26a746e in QGuiEventDispatcherGlib::processEvents (this=0x0, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#40 0x00007f2eb1c81992 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#41 0x00007f2eb1c81d6c in QEventLoop::exec (this=0x7ffffe9ad750, flags=) at kernel/qeventloop.cpp:201
#42 0x00007f2eb1c85aab in QCoreApplication::exec () at kernel/qcoreapplication.cpp:981
#43 0x00000000005f21f2 in _start ()

Reported using DrKonqi