Version:           4.3.5 (using KDE 4.3.5)
Compiler:          4.3.4 
OS:                Linux
Installed from:    Gentoo Packages

When opening up a file and sometimes switching between files(local or over sftp), Kate will completely crash.

Here is the trace:
Application: Kate (kdeinit4), signal: Segmentation fault
[Current thread is 0 (LWP 2735)]

Thread 2 (Thread 0x7f936a199910 (LWP 2736)):
#0  0x00007f9379c05199 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x00007f936ab09066 in ?? () from /usr/lib64/qt4/libQtScript.so.4
#2  0x00007f936ab090a9 in ?? () from /usr/lib64/qt4/libQtScript.so.4
#3  0x00007f9379c012a7 in start_thread () from /lib/libpthread.so.0
#4  0x00007f93765eb8cd in clone () from /lib/libc.so.6
#5  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f937a471740 (LWP 2735)):
[KCrash Handler]
#5  KTextEditor::Range::start (this=0x31) at /var/tmp/portage/kde-base/kdelibs-4.3.5/work/kdelibs-4.3.5/interfaces/ktexteditor/range.cpp:300
#6  0x00007f936aeebbf7 in translate (edit=0x21, ret=@0x7fff824b26a0, insertBehavior=KTextEditor::SmartCursor::StayOnInsert)
    at /var/tmp/portage/kde-base/kdelibs-4.3.5/work/kdelibs-4.3.5/kate/document/kateedit.h:58
#7  0x00007f936aeebf3e in KateSmartManager::translateFromRevision (this=<value optimized out>, range=<value optimized out>, insertBehavior={i = -2109003936})
    at /var/tmp/portage/kde-base/kdelibs-4.3.5/work/kdelibs-4.3.5/kate/smart/katesmartmanager.cpp:737
#8  0x00007f936aeec07b in KateSmartManager::newSmartRange (this=0x1b323a0, range=@0x7fff824b27f0, parent=0x0, insertBehavior={i = -2109003856}, internal=false)
    at /var/tmp/portage/kde-base/kdelibs-4.3.5/work/kdelibs-4.3.5/kate/smart/katesmartmanager.cpp:206
#9  0x00007f936ae9074b in KateDocument::newSmartRange (this=<value optimized out>, range=@0x7fff824b26a0, parent=0x0, insertBehavior=<value optimized out>)
    at /var/tmp/portage/kde-base/kdelibs-4.3.5/work/kdelibs-4.3.5/kate/document/katedocument.cpp:5821
#10 0x00007f936ae7a179 in KateWordCompletionView (this=0x1adc8a0, view=0x1b5f730, ac=0x1636620)
    at /var/tmp/portage/kde-base/kdelibs-4.3.5/work/kdelibs-4.3.5/kate/completion/katewordcompletion.cpp:244
#11 0x00007f936af2760f in KateView (this=0x1b5f730, doc=0x1a22a70, parent=<value optimized out>) at /var/tmp/portage/kde-base/kdelibs-4.3.5/work/kdelibs-4.3.5/kate/view/kateview.cpp:232
#12 0x00007f936ae90e34 in KateDocument::createView (this=0x1a22a70, parent=0x18091f0) at /var/tmp/portage/kde-base/kdelibs-4.3.5/work/kdelibs-4.3.5/kate/document/katedocument.cpp:339
#13 0x00007f936de9e55d in ?? () from /usr/lib64/libkateinterfaces.so.4
#14 0x00007f936de9ed18 in ?? () from /usr/lib64/libkateinterfaces.so.4
#15 0x00007f936de9f2df in ?? () from /usr/lib64/libkateinterfaces.so.4
#16 0x00007f936de9f666 in ?? () from /usr/lib64/libkateinterfaces.so.4
#17 0x00007f9379f98117 in QMetaObject::activate () from /usr/lib64/qt4/libQtCore.so.4
#18 0x00007f93771d00d2 in QAction::triggered () from /usr/lib64/qt4/libQtGui.so.4
#19 0x00007f93771d2150 in QAction::activate () from /usr/lib64/qt4/libQtGui.so.4
#20 0x00007f93771d3a1f in QAction::event () from /usr/lib64/qt4/libQtGui.so.4
#21 0x00007f93782d9433 in KAction::event (this=0x31, event=0x7fff824b3500) at /var/tmp/portage/kde-base/kdelibs-4.3.5/work/kdelibs-4.3.5/kdeui/actions/kaction.cpp:88
#22 0x00007f93771d62ed in QApplicationPrivate::notify_helper () from /usr/lib64/qt4/libQtGui.so.4
#23 0x00007f93771dd6f4 in QApplication::notify () from /usr/lib64/qt4/libQtGui.so.4
#24 0x00007f93783acf7b in KApplication::notify (this=0x7fff824b4bd0, receiver=0x1573930, event=0x7fff824b3500)
    at /var/tmp/portage/kde-base/kdelibs-4.3.5/work/kdelibs-4.3.5/kdeui/kernel/kapplication.cpp:302
#25 0x00007f9379f84cbc in QCoreApplication::notifyInternal () from /usr/lib64/qt4/libQtCore.so.4
#26 0x00007f937721285d in ?? () from /usr/lib64/qt4/libQtGui.so.4
#27 0x00007f937721451c in ?? () from /usr/lib64/qt4/libQtGui.so.4
#28 0x00007f93771df1bc in QApplication::notify () from /usr/lib64/qt4/libQtGui.so.4
#29 0x00007f93783acf7b in KApplication::notify (this=0x7fff824b4bd0, receiver=0x17e4150, event=0x7fff824b3b70)
    at /var/tmp/portage/kde-base/kdelibs-4.3.5/work/kdelibs-4.3.5/kdeui/kernel/kapplication.cpp:302
#30 0x00007f9379f84cbc in QCoreApplication::notifyInternal () from /usr/lib64/qt4/libQtCore.so.4
#31 0x00007f9377281e54 in ?? () from /usr/lib64/qt4/libQtGui.so.4
#32 0x00007f9377284129 in ?? () from /usr/lib64/qt4/libQtGui.so.4
#33 0x00007f937725dd0d in QApplication::x11ProcessEvent () from /usr/lib64/qt4/libQtGui.so.4
#34 0x00007f9377287342 in ?? () from /usr/lib64/qt4/libQtGui.so.4
#35 0x00007f9375e61f2a in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#36 0x00007f9375e65788 in ?? () from /usr/lib/libglib-2.0.so.0
#37 0x00007f9375e6593c in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#38 0x00007f9379fae5fc in QEventDispatcherGlib::processEvents () from /usr/lib64/qt4/libQtCore.so.4
#39 0x00007f9377286edf in ?? () from /usr/lib64/qt4/libQtGui.so.4
#40 0x00007f9379f835a2 in QEventLoop::processEvents () from /usr/lib64/qt4/libQtCore.so.4
#41 0x00007f9379f83974 in QEventLoop::exec () from /usr/lib64/qt4/libQtCore.so.4
#42 0x00007f9379f85e26 in QCoreApplication::exec () from /usr/lib64/qt4/libQtCore.so.4
#43 0x00007f936e0e2fcd in kdemain () from /usr/lib64/libkdeinit4_kate.so
#44 0x000000000040755a in launch (argc=1, _name=0x12cde58 "/usr/bin/kate", args=<value optimized out>, cwd=0x0, envc=1, envs=0x12cde7a "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x12cde83 "daum;1269368227;159781;2583_TIME54794001") at /var/tmp/portage/kde-base/kdelibs-4.3.5/work/kdelibs-4.3.5/kinit/kinit.cpp:670
#45 0x0000000000407d38 in handle_launcher_request (sock=7, who=<value optimized out>) at /var/tmp/portage/kde-base/kdelibs-4.3.5/work/kdelibs-4.3.5/kinit/kinit.cpp:1162
#46 0x00000000004081d1 in handle_requests (waitForPid=0) at /var/tmp/portage/kde-base/kdelibs-4.3.5/work/kdelibs-4.3.5/kinit/kinit.cpp:1355
#47 0x0000000000408db6 in main (argc=2, argv=0x7fff824b69a8, envp=0x7fff824b69c0) at /var/tmp/portage/kde-base/kdelibs-4.3.5/work/kdelibs-4.3.5/kinit/kinit.cpp:1786