Irish U2 fans trying to use the vouchers included with the band's special edition iPod are experiencing problems, a report claims.

It appears that customers who have purchased a U2 Special Edition iPod have had problems redeeming the included voucher against the U2 collection on the Irish iTunes Store. Some coupons apparently do not work, according to Irish Mac user site, MacInformation.

Apple is aware of the issue, and has set-up a system customers with vouchers can use. This asks them to enter the code which shipped with their music player in order to be given a new code that will work, according to a note sent to Irish channel partners.