Apple, the long-standing rival of Bill Gatesâ€™s Microsoft, is urging users not to upgrade their PCs to the Vista system until it comes up with a compatible version of the software that runs iPods.
Microsoft launched its long-awaited Vista operating system in a blaze of publicity last week and claimed that more than 5,000 hardware and software products would work with it.
But Apple, which has sold 90 million iPods since 2001, says many users of the iconic portable music players have had problems when connecting them to PCs using Vista.
It claims some have found that songs bought on its iTunes Store will not play on the new system, and that other Vista users have even seen their iPods corrupted when they try to unplug them. The contacts and calendar functions on iPods are also said to be affected.