Has nothing to do with server load. The current implemntation of ahvoice is for beta purposes only, in order to make it simple i just hard coded it to work with the main arena server only.
In it's final form, i.e. ah v 1.09 it, will no longer be a seperate ap but will be part of ah, (i.e. no external aplication) at that time it will work with all arenas.
HiTech