richard1982:
please correct me if I'm wrong but I asked awhile ago and I was led to believe the Duemilanove was the best, also I've noticed that the digital fade does not work on the build in LED (pin 13)
The Uno is just the latest version of the standard 328P based arduino board and it replaced the Duemilanove. There was a change to the chip used for the USB serial converter and as said the bootloader is smaller and works faster on the Uno. There is no reason that digital fade should not work identical on a Uno as on your Duemilanove, the problem if real is elsewhere.
Lefty