n00b1 - 12:41 pm on Jun 23, 2012 (gmt 0)

It's a DNS error as the 'www' DNS records don't exist. I will see if I can sort out a 404 as that was always the preferred option - as you said, I am losing visitors! I am sure I did try to redirect the www to a page that doesn't exist on the site but am fairly sure that didn't work for some reason.