Nope, the whole page was served up and my content is always displayed before AdSense, it's the last thing that loads on the page.
I'm just saying the delay between pages being served only slowed somewhat, perhaps enough to frustrate them to click other things, nothing being done intentionally, just an observation.
If that were true all those days when WebmasterWorld runs slow would have a serious impact and it ranks just fine.
I think speed would impact your site ranking if it was a constantly bad problem, not just 1 or 2 days during maintenance or some other heavy load situation.
Besides, if speed were a deal buster Twitter would be a PR0
Every night when my log analyzer fires off around 3am the server gets real sluggish for up to 30 min later in the month and the spiders are all over the site, they don't seem to mind and this has been going on nightly for years.
Don't make so much out of this post guys, it was just a unique one time observation from something that happened out of necessity.