in response to your question of "how long?" , i would say its about 6 inches.
no seriously, the SUNY schools are all quite fast. i would say 2-4 weeks.
albany is slow. pitt is about 6-8 weeks. my friend already got accepted there.
harvard-- i believe u wont hear until feb / march. they want to intrview everybody.
no idea on rochester or penn sate.