Version:           2.1 beta 1 (using KDE 4.2.4)
Compiler:          gcc (Gentoo 4.3.2-r3 p1.6, pie-10.1.5) 4.3.2, x86_64 
OS:                Linux
Installed from:    Gentoo Packages

Looks like a problem in katepart, please reassign if you agree... :)

No idea how to reproduce it, seems like a rare random occurrence.

Application: Kile (kile), signal SIGSEGV
0x00007f6c7418ae21 in nanosleep () from /lib/libc.so.6
[Current thread is 0 (LWP 12525)]

Thread 2 (Thread 0x7f6c68c14950 (LWP 12526)):
#0  0x00007f6c741b4b92 in select () from /lib/libc.so.6
#1  0x00007f6c75a15035 in QProcessManager::run (this=0x2927c40) at io/qprocess_unix.cpp:305
#2  0x00007f6c7595d8b9 in QThreadPrivate::start (arg=0x2927c40) at thread/qthread_unix.cpp:189
#3  0x00007f6c756ecff7 in start_thread (arg=<value optimized out>) at pthread_create.c:297
#4  0x00007f6c741bb48d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f6c79057750 (LWP 12525)):
[KCrash Handler]
#5  KateSmartCursor (this=0x2e509e0, position=@0x401f860, doc=0x3428190, insertBehavior=<value optimized out>)
    at /var/tmp/portage/kde-base/kdelibs-4.2.4-r3/work/kdelibs-4.2.4/kate/smart/katesmartcursor.cpp:49
#6  0x00007f6c6c82ff5f in KateSmartRange (this=0x3df1750, range=@0x7fff81096380, doc=0x3428190, parent=0x0, insertBehavior=<value optimized out>)
    at /var/tmp/portage/kde-base/kdelibs-4.2.4-r3/work/kdelibs-4.2.4/kate/smart/katesmartrange.cpp:35
#7  0x00007f6c6c835a22 in KateSmartManager::newSmartRange (this=0x342c710, range=@0x7fff81096380, parent=0x0, insertBehavior=<value optimized out>, internal=false)
    at /var/tmp/portage/kde-base/kdelibs-4.2.4-r3/work/kdelibs-4.2.4/kate/smart/katesmartmanager.cpp:207
#8  0x00007f6c6c7d9edb in KateDocument::newSmartRange (this=<value optimized out>, range=@0x2e509e0, parent=0x3428101, insertBehavior=<value optimized out>)
    at /var/tmp/portage/kde-base/kdelibs-4.2.4-r3/work/kdelibs-4.2.4/kate/document/katedocument.cpp:6044
#9  0x00007f6c6c88d370 in KateIconBorder::showBlock (this=0x35014e0, line=179) at /var/tmp/portage/kde-base/kdelibs-4.2.4-r3/work/kdelibs-4.2.4/kate/view/kateviewhelpers.cpp:1290
#10 0x00007f6c6c88dc6a in KateIconBorder::mouseMoveEvent (this=0x35014e0, e=0x7fff81096f20) at /var/tmp/portage/kde-base/kdelibs-4.2.4-r3/work/kdelibs-4.2.4/kate/view/kateviewhelpers.cpp:1317
#11 0x00007f6c74dd1c38 in QWidget::event (this=0x35014e0, event=0x7fff81096f20) at kernel/qwidget.cpp:7506
#12 0x00007f6c74d8465d in QApplicationPrivate::notify_helper (this=0x29237d0, receiver=0x35014e0, e=0x7fff81096f20) at kernel/qapplication.cpp:4057
#13 0x00007f6c74d8d7a9 in QApplication::notify (this=<value optimized out>, receiver=0x35014e0, e=0x7fff81096f20) at kernel/qapplication.cpp:3759
#14 0x00007f6c76833fdb in KApplication::notify (this=0x7fff81098d20, receiver=0x35014e0, event=0x7fff81096f20)
    at /var/tmp/portage/kde-base/kdelibs-4.2.4-r3/work/kdelibs-4.2.4/kdeui/kernel/kapplication.cpp:307
#15 0x00007f6c75a31a1b in QCoreApplication::notifyInternal (this=0x7fff81098d20, receiver=0x35014e0, event=0x7fff81096f20) at kernel/qcoreapplication.cpp:606
#16 0x00007f6c74d8ca48 in QApplicationPrivate::sendMouseEvent (receiver=0x35014e0, event=0x7fff81096f20, alienWidget=0x35014e0, nativeWidget=0x2b7b410, buttonDown=<value optimized out>, 
    lastMouseReceiver=@0x7f6c756e2f70) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:216
#17 0x00007f6c74de77fc in QETWidget::translateMouseEvent (this=0x2b7b410, event=<value optimized out>) at kernel/qapplication_x11.cpp:4448
#18 0x00007f6c74de6335 in QApplication::x11ProcessEvent (this=0x7fff81098d20, event=0x7fff81098910) at kernel/qapplication_x11.cpp:3566
#19 0x00007f6c74e0af5c in x11EventSourceDispatch (s=0x2926ed0, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#20 0x00007f6c710acbf6 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#21 0x00007f6c710afde5 in ?? () from /usr/lib/libglib-2.0.so.0
#22 0x00007f6c710afff7 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#23 0x00007f6c75a56e8f in QEventDispatcherGlib::processEvents (this=0x2923750, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:324
#24 0x00007f6c74e0a81f in QGuiEventDispatcherGlib::processEvents (this=0x0, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#25 0x00007f6c75a303d2 in QEventLoop::processEvents (this=<value optimized out>, flags={i = -2130080768}) at kernel/qeventloop.cpp:149
#26 0x00007f6c75a30565 in QEventLoop::exec (this=0x7fff81098c40, flags={i = -2130080688}) at kernel/qeventloop.cpp:196
#27 0x00007f6c75a325fc in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#28 0x00000000005e64a5 in _start ()