Hi HuskyPup, many thanks for your kind response. Someone at DigitalPoint Forum did advise me to clear the cache, which I did. Apparently, there has not been any difference.
Because I installed Feedjit Live Traffic Feed, my website response time seems to have been compromised a little. And from what I see, the text ads appear while my webpage is loading and once the page finishes loading, the text-ads are immediately replaced by graphic ads. If it is not too much trouble for you, can you take a look at <snip> and see whether the same thing also happens on your browser?
Adsense revenue had dropped drastically by 90%. Adsense just wrote to me and said: "At least 292 of the pages on <snip> are running less than three ad units. Adding any of our top performing units (336x280, 300x250, 728x90 or 160x600) to prominent sections of your pages will substantially increase your ad impressions and overall revenue."
I reduced most pages to 2 ads, as I have read in many forums that putting too much ads per page would compromise the quality and relevance of the ads. This recent message from Adsense really does make me more confused, LOL. But I know they are trying to help me. (I tried putting my 728x90 ads above the fold but apparently, I get better results by doing the reverse.)
[edited by: incrediBILL at 3:08 pm (utc) on Mar 10, 2013]
[edit reason] URL removed, see forum charter and site TOS [/edit]