I am running:
i7-3630QM 3.4Ghz  - 21KH/s
i3-2100 3.1Ghz - 9KH/s

too bad cryptsy has problems with PXC (cant generate address for deposit).
allcrypt seems dead to me - no PXC echanges are being made there.

at least one miner is GPU mining as of 1 hour ago, total hash increasing with ~800KH/s increments which suggests GPU.
but no GPU miner software is yet public.

IMHO main reason for the high value is MtGox "losing" loads of coins.
basically demand is higher than supply, if there were more coins in circulation, then supply would be higher compared to what it is now, hence the lower price.