Has your host altered anything? - I see that your TTL in the DNS for your site is set to 300 seconds which is very low - it is usualy around 86400 seconds, coupled with the fact that the SOA refresh is very high. I only set the TTL this low, if I am changing an IP address.
Also you have a cname for carfaxabbey.net should really be an A record. cnames can cause problems, and should really be avoided.
Also something is not quite right about your nameservers, it looks like your domains nameservers redicrect to ezy.net ones.
I might be barking up the wrong tree here, but if your DNS is wrong, then it can cause havoc with the site displaying quickly.
Just a thought.....
Ian