Steve, You're supposed to be keeping me up to date on this stuff :-). http://lwn.net/Articles/266361/ But it means that Samba 3.2 with a 2.6.25 kernel should be able to do TCP zerocopy read/write with Samba ! Eat your heart out Sun with your kernel CIFS implementation :-) :-). Any chance of doing some speed tests with that ? Jeremy.