Re: [850 TH] Slush's Pool (mining.bitcoin.cz); TX FEES + VarDiff
Why am I the same speed so much less reward? 
You are not alone with this problem for this particular block. If you want you may raise a ticket on the Slush support page (see 'knowledge base' link on the left side of the Account Page, you'll need to register for this and then you'll be able to raise a new ticket). Looks like there was some problem on Slush's side, which caused the reward of many people to drop to about 20-25% for this block.
When 1369... has problems with his stats, he's apparently already registered. :-)
The support site has a separate login, which differs from the pool login.
1369...
If your reward was not fixed, it's likely that you had some issue towards the end of the last block. This is because of Slush's special time-dependent reward system.
Cheers