Argh. For a couple of days now I've been unable to connect to Psyked from my home internet connection, for some inexplicable reason. I won't claim to understand any of it, but it seemed like the whole internet worked except my domain. I could even ping other websites on the same shared server, and access Psyked through a horribly slow open proxy server, but direct connection was a no-no.
Well, a bit of Googling into traceroutes, pings, hostnames and general techie mumbo-jumbo led me to reconfigure my home networks' DNS servers away from Virgin broadband and onto OpenDNS. Restart the router and boom! we're back online.
There's a lot written about a lot of things (namely problems with Virgin broadband, and some contention over the OpenDNS project). Here's a few links I picked up, if you're interested;