thinkaholic - 5:47 pm on Jun 12, 2005 (gmt 0)

It may not be your content, it may just need to be crawled again. Check out the following link about the time it takes to recrawl your content.

https://www.google.com/support/adsense/bin/answer.py?answer=10534&topic=159

So, that being said, maybe you just need to wait a bit longer for more relavant ads to start appearing.

Hope this helps!