I think we're talking about two different things here. There was a problem with our home page where for some unknown reason the system will insert a charachter in the file that renders the homepage useless. With this error, you willl see an "Error" message sort of like when the site went down a few weeks ago.
The other problem occurs when the server gets a little busy and you'll see a "try again later" screen. Usually you can just try again and it works.