I have been a very happy customer with no problems for around 3 years but the last 48 hours have been terrible, my 200mbps jumps from around 196mbps down to 1 mbps in a second and is constantly doing so. Its strange as it started happening around the same time i upgraded from 150-200mbps. I have tried everything that is suggested (i.e resetting hub / using Ethernet cable ect) and still having the same problem. Any suggestion guys please? Oh i have a super hub 2ac if that helps at all.