One thing I've noticed this game more than any other is that we're really slow at making passes, and that just kills you against the zone because it allows them to recover. If we make passes a half second faster we'd be getting the open looks Minnesota is getting.
Edit: The most discouraging thing though is that while Minnesota is playing good defense, they're hardly playing stiffling defense. It's not like the open looks aren't there. We're just not hitting them, or, we're not getting a chance to because of bad decisions or bad fundamentals(stepping out of bounds, traveling, bad passes, etc...).