The Danish Consumer Complaints Board this week ruled against Apple, saying the company was aware of a hidden defect in some iBook G4s.

Denmark's consumer champions said they had assembled sufficient evidence to prove the existence of such a defect. Apple will be required to offer financial compensation to iBook G4 customers as a result of the ruling.

A local report on MediaMac claims affected iBooks lose power and suffer blank screens after one year of use, adding that Apple has not been prepared to address this fault once the machines are out of warranty.

Apple has 14 days to accede to the Danish Consumer Complaints Board decision, or further action will be taken.