littlegiant - 6:00 pm on Aug 5, 2011 (gmt 0)
I take it you don't have any URL channels implemented? Not even directory URL channels?
At any rate, it looks like the lion's share of your earnings are coming from a few pages. This is something I realized with my main site when Panda hit. Never really thought about that before because my earnings were so stable. Only thought about my earnings on a per-site basis.