This is a preliminary release and as such should be used at your own risk. In my testing the application builds under OS X and Linux, passes the regression tests, and file transfer tests on our test connections exhibited a 1600% increase in performance (1.4MB/s versus 20.9MB/s 46ms RTT). This patch (hpn12v10) is available from http://www.psc.edu/networking/projects/hpn-ssh/openssh-4.4p1-hpn.diff.gz This patch is not linked off of the main web page as of yet. I want to run some more usage tests on it and get some feedback from people. I'm also trying to figure out a non-horrific way of passing an additional value to some of the buffer_* functions. :) If you do install it please let me know what your experiences are. Please make sure your system send and receive buffers are properly tuned (http://www.psc.edu/networking/projects/tcptune). Thanks! Chris Rapier