well i am not with ntl anymore, but my brother in law is and we both agree that if ntl do infact enforce this ridiculous cap then he will leave ntl and look to some ADSL suppliers. really, where is the sense in upgrading people to 3MB if you are gonna put the brakes on how much they download, if i bought a cruise ship i would want to sail around the world in it, not nip to france for a day out.
i don't think it will be a "soft cap" as it is now either, ntl never bothered to mention the fact they had bunged a cap limit into the AUP when nobody was looking, this time though they appear to be actively advertising the fact so i guess it will be monitored and offenders stripped of their arms for a week or so to bring their download speeds down a bit.
hopefully i'm totally wrong, no really as me and the inlaw download much (much) more than 30GB a month and so need the extra bandwidth.
edit - we have also said we would pay an extra £5 each a month (on 1 bill) to go onto some kind of "unlimited tier" as we both use the connection as much and find it very handy to have.