Similar issue, I started mining on the 'official' pool almost as soon at it went up, I got my first payment of root at 02:09 UTC and my last payment at 03:33 UTC 8 payments in total during the time but continued mining on the pool all night, until about 10 or 11 UTC but haven't had any other payments. Did the official pool not find a single block during all that time? And thus all my shares completely worthless. I know I continued to contribute shares, my miner would have failed over to another pool if that one had continued to go down and I can see from statistics that it never worked on any of my other pools during that time. A lot of people are saying they haven't received anything from the official pool at all, I suspect they joined later than I did, so it with seem that there's some kind of fault or backlog in sending out payments. It definitely is not all fine.

Edit: Unless the difficulty suddenly jumped up sooooo much that my last 7 - 8 hours of mining earned vastly less than my first 2 hours, and all earning from that time are under some (unpublished) minimum payout threshold.