Well, it looks like they may have found a way to get over the wall. Check out this article (http://www.spectrum.ieee.org/feb06/2800) and see what the latest transistor technology is. This article goes into some really heavy technical descriptions of what is being worked on. Very interesting.
Clearly we are looking at something entirely new in the way of switching transistors.
Hmmm. We're now feasibly approaching the terahertz processor milestone.
I am glad you sent the link. The detailed technical description was some of the best I've ever seen on the subject.
-Jared