Does This Happen to Anyone Else?

This is driving me nuts.  So I’m on browsing stories on Digg, which I am now officially obsessed with and fascinated by from a user perspective, a community perspective, and a business perspective.  I click on a story in Firefox (3.0, but also happened previously in versions 2.xx) and about 1/10th of the time a page that should have a banner ad that looks like this:

Has a banner ad that looks like this:

With the javascript actually typed out:

Am I the only one that this happens to?  Wtf Digg.  If this happens to anyone other than me, you’re losing impressions/money, as are your advertisers.   I feel like there’s no possible way that this happens to other people.  That it must be some Firefox plugin interfering or something…although maybe I’m wrong and no one else has caught something so obvious and ridiculously costly…

(By the way, check out my Digg profile and add me as a friend if you have an account.)