What area are you in ?
Have you tested the line quality ? Try pingtest.net for this.
Are you connecting wirelessly ? My nephew had frequent disconnects until I suggested he got an asus router ( http://www.amazon.co.uk/Asus-RT-N56U-Wireless-Hardware-streaming/dp/B004TPWRSK/ref=sr_1_6?s=computer... )
and put the superhub into modem mode. This solved it for him.
Hope this helps.