Simsi - 7:44 pm on Jan 19, 2011 (gmt 0)

I run all my ads through a custom script running in 468x60 or 120x600 iframes, on the basis that I assume this is then deemed a seperate entity to the main page when load times are calculated. Not sure if that's worth considering or not but I've never seen any ranking fluctuations that I can attribute to ad load times, even on video ads.