I have installed Breezy badger on my other computer and was working well - I then moved the computer upstairs and now cannot connect to the network that I have. I had the same problem  with windows and fixed this by changing the speed from 100BaseT full duplex to 10BaseT full duplex. I think that the problem is the poor quality of the network cable.  How do I change the connection speed with Ubuntu? I am a newbie so will need simple instructions
 
Thanks
John