Sounds like a case of separation anxiety. I have had this problem with one of my dogs and the only thing that finally helped, was _total_ ignorance. I don't make any fuss when I have to leave her. I just complitely ignore the dogs for about 20 minutes before I go (this means I don't speak to them, and I don't even look at them, no matter what they do) and then I just leave them. When I come back, I ignore them once again. My dogs get my attention only when I decide to give it to them (i.e I don't play with them if they bring me a toy, I push them away if they come to me without being called etc). This probably sounds horrible to some of you, but this will work wonders, I promise
! It also makes the dogs perform better in obedience, agility, showring etc, as when they finaly do get my attention they are on cloud nine and they will even "stand on their heads" if I tell them to :wink:..