Today I’ve noticed a black line above 468*60 AdSense block that was installed on one of my site and had the border color set to #FFFFFF:

I’ve seen it just two times. Both of them while browsing my site with Firefox 3.0b5. I guess the new design should intentionally have two black horizontal lines. Because when I’ve scrolled the page a bit, I’ve got the second line where it shouldn’t be.

The same horizontal lines were spotted in the 200*200 two ads block as well. It seems that Google trying to better distinguish AdSense ads from the website content.
Tags: affiliate programs, Google