AdSense delay serving ads on new pages

[jblack]

For some reason in late April/Early May, we started experiencing a several hour delay before adsense ads would start appearing on new articles on our site. Our site has been around for years and in the past adsense ads appeared within minutes. Our topic is very focused so it's not a case of not being able to find relevant ads, there is some type of delay in the system that seems to have happened after Google Adsense's most recent update. This delay has cut our Adsense earnings in half. I see there are a lot more posts than normal of people complaining about a reduction in adsense earnings, and I think those sites are likely expriencing the same problem and may not have realized that Adsense appears to be having a major serving problem. I have used the Google webmaster tools and had programmers look over my site, and neither finds anything wrong. Google has said that it appears that their crawlers are re-directed to a different uncrawlable url when they try to access my site, but they can't determine why this is. Has anybody else heard of this happening before? Nothing was changed on our site during the time period that the problem started occurring, but we utilize Typepad so we don't know if they have changed anything recently. Any help would be appreciated.

[skweb]

Never happened to us. Actually, the only thing that I have noticed is that the very first ads you see immediately after publishing are sort of related to the overall theme of the website (for example, on a "relationships" website, the ads are about dating even though the actual article is about "honeymoon in Cancun"). Generally in a matter of minutes you get more targeted ads. I think it has something to do with your own website.

[netmeg]

Have you noticed the same problem on other websites (not your own) with AdSense?

Google has said that it appears that their crawlers are re-directed to a different uncrawlable url when they try to access my site, but they can't determine why this is.

This would kind of tend to tell me there was a problem with your site. You might want to have some different programmers (or someone else) take a look at it.

[iwannano1]

You have problem with Server software i.e. Apache or may be with PHP/perl. Since you are using typepad which generates static html file.. I think you have problem with Apache itself. Just look at your access log files, especially for media partner bot

[jblack]

Thanks for everyone who tried to help, but Google did finally get back to me and it is indeed a problem on their side. They say it's unique to our site, and unrelated to other problems going on. Unfortunately, they can't figure out how to fix it.

It doesn't make a lot of sense to me on how it can be unique to our site when we use a fairly common blog software. However, after years of great service from Google, we have basically been shut out of adsense through no fault of our own, because of a technical problem on their side that they haven't been able to fix. Has this ever happened to anyone else? And if so how long before they fixed?

Unfortunately, we had put almost all our advertising eggs in the Adsense basket because it had always done well enough for us to cover the cost we needed it to cover. I guess it's a lesson learned about depending almost exclusively on one advertising service.