apparently BT users were unable to access winmxworld, winmxgroup, or kingmacro.net... which are all hosted at different places, that would indicate a major issue with BT... aren't you glad you just moved to them? lol
however at about the same time I also got an automatic website failure email, followed by a website fixed email from a monitoring service for winmxworld, although not the other sites, and only from one of the 2 monitoring services...
I assume there was some sort of routing issue causing you to be unable to access it, as for where the issue is... pass, by the time I woke up it was all fine - probably be some small note somewhere about a major disturbance of some major peering site or some such if you wanted to look - the major disturbances always seem to be on sundays as well
however the fact that there was some problem causing you to be unable to communicate with at least a few major ISPs and you only noticed not being able to access this site, i think that says something