Oo Cincy's Mom.. those are great tips! Although I don't have a lot of past experience with SA, Archie was pretty bad about my leaving to school when he was a puppy and I solved that very quickly by 1) Spending lots of quality time with Archie when I /was/ home, and having others visit him while I was gone 2) Crate training him very well, so that he knew his crate was a safe and comfortable place to stay. He did become quite destructive when I left, so this also solved those problems. 3) Giving him many things to entertain him while I was gone.. Sometimes, I'd hide his treats and toys all around the garden & yard and let him go out to find them just as I left. He loved this! It would occupy him for a long time, as did chewy nylabones, bouncy balls, kongs, and treat-dispensing cubes. 4) Definately do not make saying goodbye a big ordeal, just pat him and walk out. Dogs can sense if you are lingering and might get freaked out even more by that.

So... all that I said basically just went after Cincy's Moms comments - but those /are/ very good ideas, exactly what I did when Archie was young and would cry when I left him. Also, you might want to check it out with an Animal Behaviorist to seek any other more formal training/methods to 'nip this behavior in the bud' as you said. But, I know that you'll do really well with Norbert and find him a great forever home! Just make sure you're positive about all of this. He might've had bad experiences with being left alone before (pound puppy, right?) and may need some real serious TLC to fix that problem of fear of abondonment. Good luck! Keep us posted on how he's doing.