Recently noticed a new bios (FHH) for this MB, as I wasn't happy with FHE bios I thought I'd update to the latest version. Didn't really notice any improvement on FHE.
So to the point, I had the power off to my PC and hub for a week while I went away, not usually a problem but when I got back and tried to connect to the internet I couldn't get a connection. After an hour or so of resetting the hub, rebooting etc without success I remembered I'd updated the bios, switched the bios back to FHE and the connection issue was fixed. So if anyone updates to FHH and you have the same problem you know what to do.
It seems there is an issue with connection problems using the FHH bios when (in my case) the BT Home Hub was switched off and then restarted.