We set up several pages on a wordpress site and implemented adsense ads in sidebar.php. The ads were displaying without a problem.
We decided to change the permalinks from the default setting to the postname setting.
All pages on the site appeared without a problem after this change however the adsense ads disappeared on all pages with the exception of the root URL (its address did not change from mysite.com while all others changed from mysite.com/?p=15 to mysite.com/my-post-name, etc.)
I noticed that occasionally some ads appear on a page but on re-load they disappear. I also reverted back to the default permalink setting and all the ads re-appeared. On setting it back to the postname setting they disappeared again.
It has been a day since I made the permalink change and the ads still do not appear.
Anyone have a suggestion as to what is going on here?