Do you have a router between the Virgin modem and your PC? If not have you tried the standard advice given by VM in such situations of powering down both the modem and the PC then powering up the modem, waiting two minutes then power up the PC?
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Do you know that we're all in line for succession to the throne? Really?
Well, if forty-eight million, two hundred thousand, seven hundred and one people died I'd be Queen.