I think it is silly to keep pointing out what Lee does wrong when he does so many things right (as King pointed out).
He will probably never be the lockdown defender that many of you want him to be. However, he rebounds very well, has a pretty good low post game, and shows a much improved jump shot. Most importantly, he continues to show the work ethic and desire to become a better basketball player.
Defensively, his post defense is actually decent and it seems like he has improved in that area (at least to me). It is probably difficult to see that because he is being asked to guard guys much bigger than he is on a nightly basis. The area I think he has to improve in is help defense.

is a very good coach but I don't think he spends too much time on defensive rotations. I agree with DJ here and I think that area (i.e. help defense) falls under the coach.
Thats not to say that Lee has an excuse though. I'm sure he knows he has to improve in some areas and at least he has shown the work ethic it takes to do that.
"This is a very cautious situation that we're in. You have to be conservative in terms of using your assets and using them wisely. We're building for the future." - Zeke (I guess not protecting a first round pick is being conservative)