I have tried Touchdown, and it loads up all the Exchange data fine, but then when I try to use it, and switch between the contacts tab and the email tab or the calendar tab, all the data immediately gets wiped, and it starts downloading all over again. Obviously, this is useless. I've tried twice, with clean installs in between, and the exact same thing happens.
Another failed effort to get contact and calendar info onto the Nook
Another failed effort to get contact and calendar info onto the Nook