SEO Roundtable reports that since early February some Firefox users have seen a Google AdSense security error that reads: "Security Error: Content at http://googleads.g.doubleclick.net/ may not load
data from example.com." The post suggests it may not be Google-specific, but it appears the error message occurs in Firefox attached to image ads on a variety of sizes. There is more discussion around
the issue at forums on Google AdSense and WebmasterWorld. A link in the SEO Roundtable posts to an article on How-To Geek that describes how to fix the problem.
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