I've been mining at Slush's Bitcoin Pooled Mining for a little while now. I mine casually on my home rig 24/7 at 300MH/s (1xAMD6950). I was surprised to notice that overall I am rewarded much bigger rewards for Blocks that are solved quickly (and I don't mean in a per time since, I mean absolute reward):
- I get about 0.025 Bitcoins for Blocks solved in 30 seconds
- I get about 0.02 Bitcoins per block solved in less than 5 minutes
- I get about 0.017 - 0.013 for blocks in the 20min to 1h range
- I get about 0.01 Bitcoins for the 2h upwards

I don't understand this reward distribution? Can anybody else? My guess is it is a side effect of miners trying to game the other "share-based" pools?