Re: unstable connection for the past week and more
I'm sorry to hear your connection has been unstable of late. I understand how frustrating this can be.
I've run some checks this end, the hub stats all look good, the power levels are within spec and there don't appear to be any issues with timeouts. There is an issue with peak time demand on your local network cable, though this has been present for some time and is unlikely to have only caused issues over the past few weeks.
You mention the hub is in modem mode, do you connect directly to the hub or through a third party router? I'd recommend setting up a Broadband Quality Monitor to track the network connection over a period of 24-48 hours. If you could post the graph that monitor produces for us to take a look at here we should be able to gain a better understanding of the problems.