The N66U Beta 1 build has a mixture of drivers? Thats odd because now is working fine for me!Thanks for the feedback on the RT-N16 build. Asus changed the filesystem a bit in the wireless driver folder, instead of having two separate copies of the drivers, they have the RT-N16 drivers symlinked to the RT-N66U ones - a change that hadn't been carried on in my merge. So most likely the build ended up having a mixture of the old drivers and the new ones.