the way i see it is this

anyone who took out the n900 from launch from MPD or the noka flagship sotre on vodafone would have been ssold the device with "unlimited" internet thos who go over 500mb each month like i do usually about 2.5gb a month for me are entitled to cancel for instance

my bill is £40 a month for my voice texts and data if they add new charge in from 1st october and i do 2.5gb i will need to pay £20 on top of my bill for each lot of 500mb over my first 500allowance

increasing my bill by more than 10% giving me justification to cancel penalty free

if however u took out a plan recently after june and u were sold 500mb of data not "unlimited" then you are not entitled to cancel as nothing has changed for you unlike us who were sold "unlimited" and have now been told "unlimited" really means 500mb and then extra charges

im waiting for the magic text even though i have done over 1.5gb this month as soon as i get it im writing that letter and getting the f**k away from vodaFAIL never to returm