how about this
"There would be penalties for users who do not activate the iPhone in the first 30 days, AT&T said, in a move aimed at reducing the number of customers who buy an iPhone and tweak the software so they can use it on another network." - reuters.
If thats true, you will have alot of angry hackers / resellers out there.
"A computer lets you make more mistakes faster than any invention in human history - with the possible exceptions of handguns and tequila." - unknown