Reported over at WebmasterWorld that someone was automatically rejected for the use of the word "home" in his ad within the Google AdWords network. A day or so later, the user reported that it was an acknowledged glitch in the system and he was manually approved for the ad copy.
The end of the story is... I sent an email to google saying that they musy have been mistaken, and they responded that they indeed were wrong, and they re-approved the ad. Must have been a glitch in their system.