MobileMe can't sign in

Although we're now supposedly into Apple's iCloud it's still technically in Beta and as such we're currently sticking to the proven MobileMe.

Or at least we were until it stopped being able to sign in. Correct Apple ID, correct password what's going on. Having reset the password I can only guess - Apple have changed the criteria for the make-up of the password and the old one didn't correspond in one detail. As such I'm guessing that despite being correct it wasn't passing the parse test and was thus being rejected.

Either that or they're having some fun with migration.