ok so today i purchased some apps on itunes and synced my iphone to my mac, in applications tab in itunes i deselected some apps i didnt want on my iphone, i had recently purchased some on the go on my phone and was going to sync them back, when i got a message saying i need to authorize my iphone 3G and mac? i typed in my apple id and password and it said your computer is already authorized? then it went thru the same process..wth is going on?

i haven't synced my iphone to another pc/mac and all ive done is purchased some apps since yesterday on my iphone and 3 today on my mac at home? im doing a restore cause im frustrated, oh and i have it to manually manage files/music etc...any ideas

ok so ive been on the email to itunes support and apple care, and i have not got this issue resolved. ive tried authorising/re authorising my imac, as well as my macbook and mac mini. nothing. ive tried purchasing an app, which worked fine and it downloaded to my imacs itunes, then tried syncing it to my iphone, get the error "you are not authorised..etc" same when i try and sync purchased music to my iphone.

it will however work when i go to iphone, app store and download that app that i just bought. eg. i purchased leaf trombone on imac and it downloaded to applications in itunes, i then couldnt sync it to my iphone ,so i went into my phone, app store and re-downloaded it. so it works fine on phone ova purchase of apps, but i cant sync my apps/purchased music to iphone? any fixes? itunes is 8.1.1