I don't know how things are run in your world... but here in the real world an ISP can terminate or suspend service to any customer, especially if the said customer is a home subscriber.
My ISP, Shaw Cable, DOES suspend users who have worms or trojans on their systems.
It an ISP disconnects you from their service because you are running a pre SP1 WinXP workstation your ISP is doing you a FAVOUR.
Tell shaw cable they are dumb idiots for me will you?
They are doing you a favour? The only thing they are doing is being annoying idiots. If I want to run a machine without SP1 I SHOULD BE ALLOWED TO DO SO.