I'm having problem with my accounts. I have lived over sees so I have 2 accounts. 1 Australia and 1 UK. The old UK one was always used for itunes purchases. When I got a macbook in Australia I took out .mac and ever since I have always used this one account to register hardware purchases so I know which one they are on. When I registered my new mini I used this account. I've since changed app store and everything to UK account. I've sync with itunes and made sure I'm signed into UK itunes store so device remembers this last store. I can successfully download from the uk music store but I am UNABLE to download apps on my ipad. It tells me that this account is invalid in UK store and I must switch to Australian store. I am most certainly logged in everywhere by UK account and made the music purchase with UK Account. Any thoughts.