Sorry folks if this is better suited for the Apple lists, but I feel it's a samba issue so I'm posting here. We just upgraded (did a fresh install) from OS X 10.3.8 Server to 10.4.2 running Samba version 3.0.10 After upgrading we have noticed severe performance hits on our Windows machines (XP SP2). Excel documents can take as long as a minute to save to the network share and our Quickbooks documents are taking up to 5 minutes to open and corrupting almost daily. I don't have a old copy of our 10.3.8 that I can easily look at to get the smb.conf file to compare with the current and I'm not a samba pro anyways so is there anything that jumps out at anyone here? Or a clue on where to start looking for problems? Thanks in advance, Jay