I haven't seen it yet - but I have received an influx of emails starting Thursday from people who were either updating their existing AdWords campaign or were trying to create a new one. They all reported errors and timeouts - There was a Red Text message that occasionally appeared at the top of the page, which stated that Google AdWords was going to, be offline in 10 minutes.

I wonder if what you saw was a placeholder for new ads during that down time.

The last question/email on the topic came in today at 3:00 PM EST - When did you first notice and have you seen it since?

I also noted in another thread where Fathom posted information about datacenter IP changes - Does anyone know when that took place?