Currently Being ModeratedJun 19, 2013 12:30 PM (in response to SchoolGuy)
The current release of the ARD adminstrator application works fine with my Snow Leopard clients which have the 3.5.3 client, though I only have a few and my use is pretty modest. You may get feedback from others who use ARD with a larger client base.
Currently Being ModeratedJun 21, 2013 5:34 AM (in response to SchoolGuy)
I still have a PPC Tiger as an ARD client - not all features are supported but many are.