The problem with the multipool is:
Connection to multipool lost and cgminer freezes.
My payout adress is:
P9SA8Kw661FikFBYT16QJkZt3fXMFSq83T
Working on Win 7 64 bit with CGminer
Nation warz and other pools give me 0 problems with exact same config.
looking into for you right now..
I think it was a local miner issues, this address is submitting may valid shares, there seems to me no issues at all?! (any more?!)