I came accross something very strange when i was testing my pages in FireFox.
The Adsense blocks are commented out (green) in firefox.
It does render however properly when i paste all the rendered code in a blank aspx page in the same project without using masterpage.
http://picpaste.com/problem.jpg
Here’s a picture of the problem. As you can see on one of the pages the script code is green. How is that possible?
Solved. the page was sent as application/xhtml+xml which has to be text/html. Although not defined as such it did send it with that content-type.
Any solutions on how to get AdSense work on firefox with content-type application/xhtml+xml?