Something that has seemed to have gotten worse this year at NHIS is Turn 2 and Turn 11. ...and Yeah, as Ken said, Turn 12 needs to get patched.
In the rain(2 of my 3 trackdays were in the rain this year, the third one was rain for part of the day), Turn 2 seems to have a big oil slick that appears in the rain and runs down the bank. It doesn't matter if you are tight at the apex of 2, a few feet out, or 10 feet off the curb at the apex. You can actually see the slick running all the way down the bank. It's very dangerous and we had a LOT of crashes there this year(instructors were not spared these crashes either). Its almost like you have to come around 1A and keep to the right to start and getting your turning for turn 2 done early so you can get back to a mostly vertical position when you cross the "oil stripe of horror." I can't say much about T2 in the dry as I can't remember the last time I rode NHIS on a nice dry sunny day.
I'm learning a lot about smoothness though, and that never hurts.
Turn 11 looks to have some newer pavement(I don't know when they redid that, anyone know?) that seems to still be a bit greasy. You can just feel that the traction isn't there. Obviously, it doesn't seem as bad as Turn 2, but we had lots of crashes there just the same. Again, this is in the wet. ...no idea what it feels like in the dry.
I'm hoping for a few dry track days in 2008.