Dear Stack Overflow, the ads you've allowed are literally ruining your website

I think you should look into the noscript addon + a Kasperssky TDSS scan. This looks more like a browser hijack than a Stack Overflow ad.

Furthermore, normal Stack Overflow ads have a upvote/downvote mechanism if you mouseover with js enabled.

Have you reported this to SO? I know they are very picky about the ads they run, I'm sure they would address this.

dude, that is your computer - its fine on mine.