I have been using adsense from a long time.. But havent create a new ad from Adsense setup in a long time now.. Today i created one ad unit and placed the code on my site, it says "the page cannot be found" in IE.. Do ads take a bit of time to display, as we now have the manage ads feature? or is it instant like before?
Usually takes just a few minutes. Haven't seen a "page cannot be found" though. Maybe I've never checked in IE though.
Sometimes it happens to me if I'm using a very slow internet connection. It's good that the ads are finally displaying now.