I'm really not a fan of Series 6 either (asides from Tabula Rasa and Once More With Feeling) - however, I do also get sick of Noxton bashing. She may have had a role in what I didn't like about the later series of the show, but there was a whole writing team involved, not to mention the fact that Joss was away working on new projects. Not solely her fault that it wasn't great (IMHO, of course).

Of course, I'm biased because she wrote some great Oz episodes, in which Seth Green was often shirtless. Hurrah! :D