It's nice to see that all the naysayers were wrong, that the hash rate didn't suddenly plummet when block 210,000 was hit.
Give it some time. I would be really surprised if the hasrate won't change.
I don't think anyone suggested half of the network was sitting next to a switch waiting for 210000.
It will take some time for the affect of the halving to make its way through the network.
I'm sure a lot of gamer/miner chaps out there aren't aware of the halving and probably won't notice the drop in revenue for a while.