@Shokhet Sometimes the server seems to lose track of who you are (probably some internal machine gets restarted or something. I lost a whole post that way once.
@YEZ Dang, that's annoying. ....it might be worthwhile, next time you do that, to copy the whole post into Notepad once every few changes, so that you have a (relatively recent) copy on your hard drive that SE server failures can't get to
