I hope it's not hardware as I can't get service on the Solaris box.... I am trying to use ndd but the /dev/elx driver does not work with NDD AFIK. I have tried several TCP tuning options but still keep locking up the Solaris network stack: rmem_default=32768 rmem_max=65536 tcp_window_scaling=0 tcp_sack=0 tcp_fack=0 Thanks, -- Wade Hampton