About a month ago, we reported that AdSense reports were not sorting properly.
On my "Overview" screen, when I click on "Top Channels" it is not sorting by "Earnings" as usual. I can't detect a sort field by the data presented, it seems either to be unsorted or sorted by channel-id or some other hidden field.
A Google representative confirmed the issue and said they are working on it. One month later, it is now finally fixed.
We have reports from DigitalPoint Forums, Google Groups, WebmasterWorld and Search Engine Roundtable Forums that the reports are now sorting properly.
I guess it wasn't a huge priority for Google to fix those reports. AdSense publishers are elated the reports are fixed.
Forum discussion at DigitalPoint Forums, Google Groups, WebmasterWorld and Search Engine Roundtable Forums.