Since Dean brought it up in the Brake discussion thread...
Please note that when taking a long time to edit a reply, your session can time-out, so when you finally attempt to post, you'll just get an "invalid session" error, and more than likely your post is lost forever.
If you're making a long post, please remember to edit in a text editor (or better yet, something w/ spell check for you non-spellers like me) then paste your post into the web browser. You'll be much happier taking the extra step to use an external editor than to lose 45 minutes of thoughtful writing.