it happed to me the other day. i was replacing the code and forgot <script type="text/javascript" src="http://pagead2.googlesyndication.com/pagead/show_ads.js"> </script> PHP: by it self it will do nothing,but if you have adsense somewhere esle it will do what it did on your site. <script type="text/javascript"><!-- google_ad_client = "your pub"; google_ad_width = 125; google_ad_height = 125; google_ad_format = "125x125_as"; google_ad_type = "text"; //--> </script> <script type="text/javascript" src="http://pagead2.googlesyndication.com/pagead/show_ads.js"> </script> <script type="text/javascript" src="http://pagead2.googlesyndication.com/pagead/show_ads.js"> </script> PHP: try that and see what happens. for some reason it is not picking up the style on that ad code.
Yes that could be true, but if you read down a couple of posts from the 1st one, you will see I posted my ad code, and it is 100% correct. Both the 160x600 on the site (one on the left one on the right) is using the same code, on the left it was fine - on the right it was not. Either way, I refresh a couple of times and it went back to the "regular" style.