ABout 2 months ago I changed the e-mail associated with my iTunes account because I no longer used that e-mail address. Since then, both Itunes and the iPhone app store bring up my old username by default. I wiped and re-imaged my PC a couple weeks ago due to an unrelated issue, but iTunes and the iPhone seem hell bent on making me use the old account. I've tried everything I can think of to get rid of the old address, but nothing seems to work. I sign out of iTunes, enter the new account and login and then resync and it still has the old address. It won't even let me login using the old account. Any suggestions?