[T]he University of Nebraska has told the RIAA that it can't help them identify many of the students accused of file trading. The school's system changes a computer's IP address each time its turned on, and it only keeps this information for month. After that month, the school has no way of associating an IP address with a computer or its user. The RIAA is angry about this, and a spokesman for the group criticized the university for not understanding "the need to retain these records". This is a ridiculous complaint. The university doesn't have a need to retain these records, and there's no reason it should do so out of some obligation to the RIAA. If there were any doubt that the university is really irritated by the RIAA's requests, it has requested that the RIAA pay the university to reimburse its expenses from dealing with this (good luck with that).