Starting last night (2nd Dec) I've been getting some pretty insane packet loss on my connection, anywhere from 10 ~ 50% accompanied by an increase in mostly T4 timeouts on my Hub (along with a few T2 and T3, but mostly T4). Both MyVirginMedia and 0800 561 0061 indicate no faults in my area, and yet...
Have you called CS and see what they say when they test your connection? Some localised faults may not appear on the 0800 number until they know about them through customers calling in.
I note you are using a Superhub (not a Hub3/4/5)... which model is it? Is it in modem mode with your own router - or in normal router mode. Do you have ethernet cable connections into it (or the router) ? If so can you disconnect them all and see if the BQM cleans up. If it does then plug them back in one by one to identify where the issue lays. Also try a new ethernet cable to connect your laptop/computer to the SH in cas it is "failing".
-------------------- John --------------------
I do not work for VM. My services: HD TV on VIP (+ Sky Sports & Movies & BT sport), x3 V6 boxes (1 wired 2 WiFi,) SH2 in modem mode with Airport Extreme Router +2 Airport Express's. On VIVID200, Talk Anytime Phone, x2 Mobile SIM only iPhones.