Using the command switches has seemed to be very stable for me, I have put all the profile info on a network drive for each user and each app - Acad 2006, Ldd and civil 3d. The only paths you need to keep local are the caching paths like temp and xref temp. I did nto do this with windows though, I mearly copied all the document setting\acad.... info to a network drive and changed the ARG file in Acad. Also, gig cards and switchs are helpful. I have done this on a Novell server with not problems so far.