Well after a while I have just got a network connection hanging and was able to do a traceroute to the site:-
chris$ traceroute www.broadbandbuyer.co.uk traceroute to www.broadbandbuyer.co.uk (195.224.249.41), 30 hops max, 40 byte packets 1 * * * 2 * * * 3 * * * 4 * * * 5 * * * 6 * * * 7 * * * 8 * * * 9 * * * 10 * * * 11 * * * 12 * * * 13 * * * 14 * * * 15 * * * 16 * * * 17 * * * 18 * * * 19 * * * 20 * * * 21 * * * 22 * * * 23 * * * 24 * * * 25 * * * 26 * * * 27 * * * 28 * * * 29 * * * 30 * * *
Hmmmm. The rest of the internet works fine, no problems at all but any connection to anywhere on www.broadbandbuyer.co.uk just hangs.
A host or dig to www.broadbandbuyer.co.uk works fine.
So I think it something getting stuck at this end but I wish I could work out what!
Ah, another clue (or not), connecting to www.broadbandbuyer.co.uk from another computer on the LAN here works OK while the connections from my desktop are still hanging. Connecting from a different browser on my desktop computer doesn't work though.
Any suggestions for further diagnosis?