If you're disappointed, it's because you were expecting Led Zeppelin circa 1973 and not Led Zeppelin circa 2007. Temper your expectations with reality. They're not spring chickens anymore, so things will be different than the last time some of you saw them live. That doesn't mean they're going to suck.....they wouldn't be doing this if they didn't think they could do a superb job. It just means, realize they're older and Robert won't be screeching anymore.