Hi, the delayed payment isnt really a delay. you received payment when a block was found.If you follow the blockchain you will see that the payment is made when that block is found, maybe with a 1 minute delay or so.for instance, at the moment you will have more payout than before in the next block, but since the pool didnt found any block since 04 2013 13:34:57 GMT+0100 (WEST) you didnt received your share yet.
About the scan time, I would asume it depends on your connection and from where you are from. The computer is in Portugal, so maybe it will take some delay from here to your place.
Also, bear in mind, this is not a server in a "network Facility" I just have it running it at home, and since I hace a reasonably good connection I decided to try the pool, however I dont know if it is ready to be out of beta.I would think on that if I can get a full week uptime
For now ...
Node uptime 4.966 (119.174 hours)
Almost 2 days to go
P.S. Link of the blockchain last discovered block. Check the address and look the time you received you payment.
http://nib.p2pool.nl/block/76e6ba130fdbd44b759e8f1389fb87977573758c06b45a8592f1fd925f9fe936