So slow listing network shared folders and drives.

Hi!!

I'm reporting a very slow connection between my MacBook Pro 13" (snow leopard) and my MacPro 8 core (leopard). When I try to reach the macpro in finder (shared) passed 1 or 2 minutes until the system ask me user/pass, then show me the list of my shared folders and drives. Navigating through them is ok, ut when I return to the main list, SnowLeopard again waits 1 minutes or 2 to show. Before, the main list always remain there.

Any help??