I have spent a couple hours with Apple tech support and they seemed to know less than me about the issue. So here is my problem again in more detail:
1. When copying files between my snow leopard machine and my windows xp machine over smb I get error code -39.
2. When copying files between my snow leopard machine and my other macbook running 10.4.10, the file transfer gets stuck at zero kb.
3. No problems copying files between 10.4.10 macbook and win xp machine over smb.
I have tried via wired ethernet connection as well as over wireless and encounter the same problems. I have not tried a direct connection between the snow leopard computer and either the win xp machine or the other macbook running 10.4.10 because I do not have a crossover cable, if someone does, can they try it and see if they get the same problem? This cant be a universal problem as it is a far too big flaw and 10.6 would never have been released if you couldn't copy files across the network. I'm thinking that in the upgrade, some software is not compatible and is somehow complicating the transfer of files across the network. Could it be something to do with permissions? Anyone have any clues?
here is a screenshot of the issue:
http://www.zshare.net/image/650432085a7911cd/