Hi, Thanks for the quick response.
I changed the ethernet cable just incase this was the problem and so far it appears to be holding a connection.
It has been over 4 hours now without disconnecting, whereas before it would only hold a connection for around 20-30 mins.
Funny thing is, the cable is the one that was supplied with the router and it is only 3 weeks old.
If I do not reply again you can take it that the cable was at fault.
All the best