I get same problem from 2 months. if i open 3-4 tabs in firefox it slows down and won't let me do anything...
tested the speed on speedtest.net. its 3.4 Download & 0.02 Upload. I'm paying for 10Mbps.
THANK GOD I'VE N'T SIGNEDUP FOR OTHER VM SERVICES.

My friend warned me as he's an existing customer. but i ignored him then..
Rang up virgin media on 0845 number after a puzzle game, like choosing various options (tech team option at the end) the line got cut. (3-4 times on friday&sat)

can any one suggest how to get speed connection (i need
upload speed at least 120kbps)
My location Hounslow (TW3)
Modem - Scientific atlanta router - netgear wgr614
thanks