I made a template (mast-head) change to of my pages which really messed up the targeting of ads. Most ads have become very targeted at the "general topic" of my site, but not each individual page. I have reverted the change, and want to know how long until I can expect the problem to be resolved.
Over the last week, my clickthru rate fell more than in half. I have tens of thousands of pages, all of which now seem to be affected.