Thanks for the replies, I suppose it must have a firmware upgrade, will have to wait and see how it performs 
Correct. LAN port 4 is changed to a WAN port.
The general performance is OK, but the wireless is poor.
I use
one of these. It's suited me fine, on IDNet FTTC 40/10, and Plusnet 40/2 and 80/20.
The Netgear an earlier poster mentioned was supplied with the 40/2 - that was poor wireless as well. When I moved to the 80/20 they sent a 582n.
I now have mine plus two spares

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My broadband basic info/help site - www.robertos.me.uk |
Domains,website and mail hosting - Tsohost.
Connection - Plusnet UnLim Fibre (FTTC). Sync ~ 541/15.2Mbps @ 600m. -
BQM
"Where talent is a dwarf, self-esteem is a giant." - Jean-Antoine Petit-Senn.
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Allergy information: This post was manufactured in an environment where nuts are present. It may include traces of understatement, litotes and humour.