Starting October 22nd, Monday, there has been reporting discrepancies in Google AdSense between the aggregate numbers and the broken down channel reports.
Here are some of the reports in a WebmasterWorld thread:
Now the URL channels show 30% higher earnings and number of clicks than sum of individual channels.
Same here. Stats on URL channels is out of whack.
Glad I'm not the only one. All channels for one site are showing about one tenth of what should normally be there. I thought there had been an outage on the site -- but no such thing...
This bug has also been confirmed by Google. AdSenseAdvisor confirmed yesterday at 4:50 pm (EST) the bug:
Our engineers are aware of this aggregate/channels reporting discrepancy and are working on resolving it as quickly as they can. I'll let you know when I know more.
Sorry for any confusion.
Forum discussion at WebmasterWorld.