fred9989 - 3:02 am on Mar 6, 2012 (gmt 0)

Sid: Something very odd just happened. I searched for my top keyword term. We have been at #3 since Panda, previously #1. My listing had disappeared completely, nowhere down to page 10 (in 10s). I did the same search on a different browser with no history on it, same result. Other terms were where I expected them. Then 2 minutes later I'm back at #3. What's going on?

Here's another interesting thing to try: if you have your results set to 10 per page, change the settings to 100 per page, then run the search again. In my case, the site that had "disappeared" from the results when showing 10 per page reappears in the same place it originally was, and remains there when I switch the results back to 10 per page. (Even when I am signed out of G with history turned offand cookies cleared...but using same ISP though.)
If anyone can explain that, I'd be grateful. It has been happening over several days now.