conroy - 7:37 pm on Jul 12, 2012 (gmt 0)
Over a year ago but it did not coincide with any panda date. The site actually went up after panda. Nothing changed with the announcement of the above the fold ad penalty from earlier this year though. It's hard to be 100% sure about all these things but all I know is I removed the ad and it's the only change I made.
Just some info for people that it's worth trying removing all above the fold ads and see what happens.