change in raid in kernel 2.2.15

[Dylan]

Hi I was just wondering whether anything drastic had changed between 2.2.14-5 and 2.2.15 as I can't run any raid devices under my 2.2.15 kernel but can run them all under my 2.2.14-5 kernel.   Have tried all the obvious and have made sure that all the right options are compiled in Have you any other ideas Cheers Dylan