I run most of the apps people are complaining about here, but with
10.4.2 clients and 10.3.9 servers. I have some 10.3.9 clients as
well, only for Pro Tools 6.4 LE.
I don't see these problems. We did have a bit of a problem with
dropboxes, but this resolved it for me:
serveradmin set afp:noNetworkUsers = y
based on a suggestion Greg Neagle gave me on the MacEnterprise list.