Oh my goodness. That just sucks.

When UPS comes to our house, if its addressed to my dad, any one of us signs and they're ok with that. They don't care who signs, just that it was delivered at the right address. If there's no one at home, they just leave it outside, no matter how expensive the item might be! I didn't realize they would let just *anyone* sign it at a company! Its different at home because its still going to the right household and the right family, but company? Gosh that's so awful. I hope you can try to do something that can get you your computer back. Try talking to the company and see if they can find out who has it or where the person who recieved it put it. I hope its not stolen.