Have had NTL 500K broadband 25 £/month (upgraded FOC to 600K) for about two years. Great at first but suspected high contention with the rest of the street, bit the bullet and went for 1 meg (35 quid per month). Absolutely brilliant, consistantly 1Mbit transfers. Have a LINKSYS router, two PCs and a laptop connected plus a teenage son who seem to back up the entire internet every evening. The NTL support has to be the worst on the planet, even worse than O2 and the GAS board.
CC