It was a classic case of "the idea is right, but the execution is wrong." It was indeed the ads, and I had indeed removed them...but I'd forgotten to remove the call to the JavaScript (in another template) file that connected to the ad server, even though I wasn't displaying them any more.
So, we found the one thing that isn't Camo's fault.
So, we found the one thing that isn't Camo's fault.
I found out that MoFo looks weird with Opera No worries of course, it's just funny how different browsers render different sites.