[ninram]

I have been waiting over 12 hours for iTunes to register my phone with at&t.

All I get is a "Please wait while we process your request."

Is anyone else having/had this problem?

[big9erfan]

Try restarting your phone...call AT&T from another number and see what the problem is.

[california_matthew]

Could be you don't have the newest version of iTunes!

[mockinmaro]

I face the same situation and don't wait for 12 hours, the AT&T help center solve the iTunes although i use the previous version.