OK, it's not really infinite because it takes time to watch the advertisement, but at least for me, on a Droid in the UK, I have a single advertisement that repeats if I kill the program and restart after watching it. Since I noticed last night I have watched it a slightly disturbing 130 times, and it's on right now. This "bug" won't last forever, but it might last all day.

Edit: I know this has been reported on page 12 or something of the Free gold thread, but this seems important enough to me that it should be flagged up.