You cannot use a freq of 1000 with cgminer currently! If you do you will see exactly what you explained...no submitted shares at the pool. Max is 950.
Be happy that you are getting more than the officially stated 300 Kh/s! Who promised you 400?
Not that I don't believe you:

It's just that
http://puu.sh/7CaqB.pngI doubt you.
I didn't read the rest so whoever was asking PM me.