I am having a problem getting two Google AdSense ads to appear on the same page. One is a 468x60 small banner at top right of page and the other is a 160x600 down the left side of page. Both are "Text & image ads." I have re-created both a number of times but only one is visible at any given time. The problem appears to be related to layering but I have manipulated the layers of each ad in every way that I can think of with no improvement. When I get the topside ad to appear, the leftside ad doesn't show, and vice versa.

Does anyone have any suggestions? This is very frustrating.

BTW: My site is not yet published, but I see the same results whether I use the "Export & preview" option or export and open in my browser (Firefox 3.5.3).