First time I have witnessed this.
I saw my final adsense earnings for yesterday when I got up this morning. At 11 am I noticed the amount was about 30% less which I thought was odd. About 20 minutes ago I see the earnings back to what they were. When I saw the lower earnings on my cell phone I did log into the control panel from my desktop to confirm the earnings which were lower.
Did google have a hiccup?