I was also got paid about 40% of the normal amount on 2 miners (2 addresses) :/
Did you compare youre payout to other user's payout with similar hashrates?
I seem to be getting 50% compared to other users with similar hashrate

I have 2 rigs with 2gpu's each (so 4gpu's total), I have everything to 1 bitcoin adress (1username).
Is it better have 2 addresses/usernames?
Values fluctuate constantly and some currencies can take days to mature and exchange. It seems like people are putting way to much focus on trying to tie hash rate to daily performance. Point your miner at the pool and see what you average for a week or two. I've generally noticed that if my payout is low one day it gets made up for with a great day at some point. Another good thing to remember is that past performance is no guarantee of future performance. heh..
Chad
But shouldnt everyone's bitcoin payout be relative?
So if someone has 1000khash and they get 0,01btc on 21dec 2:30am, then if another user has 3000khash he should get 0,03btc on 21dec 2:30am?
As far as I see, everyone got low payout for the last 24+ hours.. but what caused it ?