better than 9MB/sec transferring from an smbclient (linux) to a Win2K Server in a Domain.
Of course I also get nearly theoretical max on NFS transfers from the same Linux machine another linux NFS server.
BTW:
3 minutes and 18 seconds to transfer a 1918MB file via smb. (WXPP.tar.bz2)
3 minutes and 5 seconds to transfer a 1918MB file via nfs. (WXPP.tar.bz2)
A lot depends on your switch equipment as well.
It's nice to know that M$ at least understand some problems with the OS they own.