Keep your eye on the BQM see if the red fringe disappears when the work is complete.
Meanwhile... what devices have you got plugged into the Hub on ethernet cables?
There have been several threads on here recently where similar BQM problems were eventually pinned down to a dodgy piece of connected kit. Bad connectors on ethernet cables and faulty network switches being high on the list of suspects
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John
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I do not work for VM. My services: HD TV on VIP (+ Sky Sports & Movies & BT sport), x3 V6 boxes (1 wired, 1 WiFi, 1 on PA) Hub5 in modem mode with Apple Airport Extreme Router +2 Airport Express's. On 250Mbps, Talk Anytime Phone, x2 Mobile SIM only iPhones.