It's encouraging to hear that the biting calms down. It is a big problem here with our 9 week old terrier. He gets into a crazed state and just won't leave us alone - I have resorted to putting him into the crate as there is nothing else we can do with him. I really don't like doing it though.
I think he is teething as he is chewing everything constantly, we have also found around 7 little teeth on the floor - he has loads of chew toys but loses interest in them after a few minutes and comes back to our feet or furniture.
Ledkr - I too am really fed up of standing in the cold on poo and wee watch. It feels endless. I am taking him out pretty much every half an hour at the moment - I have never spent so much time in my garden. The success rate is still fairly low though.
I have to keep positive by keeping in mind that we really wanted a dog - this puppy phase is just something to get through. With a lot of wine.