Somebody please tell me that the Graphs page on the site is broke. I'm dieing here. heh. the increase in hashing power the pool has seen has pretty much maintained the number of blocks that the pool has been getting each day. but according to the graph i'm getting half the btcs i was 5 days ago. i would expect this if the hashing power had doubled, but not for about a 10% rise. hmmm. where's Lucko when i need him? heheheh.
Sleeping, working... If this was not a joke and you would really like my input here it is. The reword has also a luck factor. Last seven days the luck was 83%. So this is where 17% of your reword has gone. Then it was a difficulty increase by 16%(not complicity sure), so you get even less. 0,83*0,84=0,6972. So that explain 30% less. There were also some lost blocks so that probably adds some percentage(I know that one day they reduce reword by 10%)... And calculation error or two

and you are there. The whole hashrate of the pool is not an issue. Even if it would 10x more the reword for a day, week, year would still be the same... Only number of block would change and amount you get per block. The only think you are looking at are luck, difficulty and invalids (if there are no errors).