It's not easy. At current diff I'm not mining anymore. Unless the diff drops to below 500 it's really not worth it to mine. There are more profitable scrypt coins to mine right now ;-)

Still buying Root though =D

EDIT: @Bitsta - Before I stopped mining I switched my rig from the official pool to Supranova and started getting more reasonable payouts. I think I'm still owed for quite a few shares from the official pool..