Urgh, you can play the validation game all day or week. Fix one error and another crops up. I rarely come across a complex site that fully validates. I have no time nor patience to track down the smallest of misplaced characters or lines of CSS to please a machine.
If you, me, and the spiders can read the site I'm good.
I am concerned about the meta-robots though. I do have a robots.txt in place and wonder what's up with that. Thanks for pointing it out.