NTFS Streams with 10.5.6

Hello, We finally upgraded our fileserver to 10.5. All our clients are using Windows XP SP3. Since this upgrade, we have lots of issues like this one: Streams. Streams, on NTFS, are like ressource fork on hfs. The problem we are facing now, it's when we try to copy a file with a stream link to it, the server reply that the disk is full!!!!! Files like the *.url favorites have a stream for the icon. So you can't copy them on the server. There was no problem like this with 10.4 by the way... Anyone had this issue and got a solution? Thanks, Fred