Welcome to WebmasterWorld Guest from 188.8.131.52
The Adsense FAQ says that the two will not match and to determine the actual amount, I should check the aggregate.. which when checked, reflects the amount originally shown, which is less than 1/2 of the total by channels. Visits are up, clicks are up, but suddenly, with only the channels added, the earnings shown has fallen dramatically.
Today I killed the channels and went back to the way it used to be. By only adding channel descriptions and adding the number to google_ad_channel ="number here";.... can it screw things up that bad?