Something isn't right today. I am over 50% down on clicks and money for this time of day. Yesterday when working offline, some of the pages started to show PSA, but were okay when live. [These were old pages that aldready had relevant ads on them].
Same here - The trend affects only one subdomain on my site (non English) - I've started noticing the trend 5 days ago. I am at around 3K pageviews a day and my CTR has traditionaly been in a 4% range. I am averaging 0.2% yesterday and today.