i am also mining in the yac.litecoin.net pool and yes, payouts are slowly because they have a different reward system and need 512 confirmations for a block!

But if you mine constantly for 24 and more your payouts will come

They are flowing in even faster now because since yesterday pool hashing rate exploded from 18MH/s to 53MH/s today!

(GPU Miners starting to get in, or is it the crash of WDC making YAC more profitabily now? Or both?)