For the past week or so, I have had problems viewing my Adsense channel data - a problem I know just about everyone else had as well. Today it seems that my channel data is mostly correct, but my non-custom channel impressions are not being displayed. My page impressions are now equal to the sum of my individual channel impressions, but that should not be the case. I have many ads that do not have custom channels, and they usually receive about 60% of my total impressions in a given day. I checked to make sure that these ads were appearing correctly, and they seem to be fine. Did Google correct the channel reporting by only reporting channels?