Hi All, This is a strange one. Ages ago we suddenly had NZ visitors complaining about time outs and white screens for our web apps. Noting else was broken except the people across the ditch (and a few other overseas customers). After testing and trying a vast number of things we put up varnish and told them to connect on port :6xxx and hey presto it all went back to normal. We did this for a few months and then decided to move everything on :80 through varnish. The speed improvement is great. Love it. Amazing. And now we have the NZ clients complaining that things are dropping out and whitescreening again. Is there a great firewall of Australia on port 80? How can one service on port :6xxx work flawlessly and then when moved to :80 kill overseas users? Really this is doing my head in. I am faced with changing everything back (and removing varnish and the speed it gives) and getting the NZ folks to use a weird port again. Clues appreciated. Cheers Piers