I apolgize in advance if this has already been covered in the forums, but i did a search and couldn't find the answer. A while back i remember reading in the forums that there was specutlation regarding the number of goups one would be able to create on the new hi-md media, and how it would be limited to 20. Now the nh600d is out. I've read many reviews of the model and its advancments over netmd; however, i have not seen any comments on the groups being restricted. Has anyone who has purchased the unit tested this?