I like to tweak OS's so this is a network performance tweaks I do to Mac OS X 10.7. Website I found some information. http://xgu.ru/wiki/TCP_tuning http://support.apple.com/downloads/Broadband_Tuner_1_0 http://slaptijack.com/system-administration/mac-os-x-tcp-performance-tuning/ Start up a Terminal window and type information below. $ sudo pico /etc/sysctl.conf and add information below. net.inet.tcp.rfc1323=1 #kern.ipc.maxsockbuf=16777216 Max size seems to be 6291456 which is ..