I ran into the same problem quite a few times. Could not make any edit
in old files. The funny thing is, if I copy-and-paste everything into a
new empty document, the problem went away. So it could not just be the
length of the line, because the length was the same in copy-and-paste,
but somehow
I am using 2.0.84 (2.1 beta3) in karmic, and this problem persists.
About half of the time, Kile does not shut down properly, and causes later
crashes.
When I exit Kile, the process does not always exit. pgrep kile still yields a
process ID.
Within the next 10 minutes, the crash dialog will