Don't give up yet.
I have recieved a number of quries regarding the site this week and have experienced some problems myself today.
It appears the server on which the site is hosted is having problems and so I have moved the site to a new server. It will take a 24/48 hours for the DNS changes to propagate the net but is you do not want to wait you can edit the 'hosts' file on your pc to include the line
and then you will be able to access it without waiting.