I have been mining with 600MH/S and the last block was found three days ago. I guess difficult has been raised to new level used to at least one block per day.
What monstrosity are you mining with? And this guy below talking about gh?

?
A number of CPUs are getting high hundreds of MH/s. The algorithm is the fastest in the world on CPUs, by far. There are GPU miners being developed, but in tests they are not beating CPUs right now.