Taken from the NTL server status page,might give a better idea when to expect your upgrade.
On the morning of Friday the 2nd of June between midnight and 6 AM,
Network upgrades will result in a loss of service in Baguley and the surrounding areas.
On the Morning of Sunday 4th June between midnight and 6am,
Essential server maintenance will result in a loss of Registration services.
The following work will be taking place during the week commencing Monday the 5th of June.
On the morning of Monday the 5th of June between midnight and 6 AM,
Essential server maintenance will result in a loss of Registration services.
On the morning of Tuesday the 6th of June between midnight and 6 AM,
Network upgrades will result in a loss of service in Baguley, Grimsby, Scunthorpe, Stockton, Hemel Hempstead, Oxford, Colchester, Bishops Stortford, Stapleford, Coventry, Warwick, Andover, Reading, Lichfield and the surrounding areas.
Essential server maintenance will result in a brief loss of Registration, Broadband Medic and the ntlworld homepage services.
Network rebalancing across the country will result in a brief loss of service for all customers.
On the morning of Wednesday the 7th of June between midnight and 6 AM,
Network optimisation will result in a loss of service in the Birmingham, Baguley, Grimsby, Scunthorpe, Stockton, Hemel Hempstead, Oxford, Lewisham, Newmarket, Acton and the surrounding areas.
On the morning of Thursday the 8th of June between midnight and 6 AM,
Network upgrades will result in a loss of service in the Baguley, Grimsby, Scunthorpe, Hemel Hempstead, Oxford, Huddersfield, Poole and the surrounding areas.
, hopefully the modem just needs resetting but I can't check till I get home tonight 
