Version: unspecified (using KDE 4.6.0) OS: Linux The summary says all. Try to open a file with a very long line in it like https://ajax.googleapis.com/ajax/libs/jquery/1.5.1/jquery.min.js and try to work with it. Kate works very slow and crashes most of the time after a few minutes Reproducible: Always
*** This bug has been marked as a duplicate of bug 225228 ***