when i try to add my yahoo account it says 'the username or password for 'apple.imap.mail.yahoo.com' is incorrect. It did work about a week ago but just stopped working. I have looked all over the internet for different ways of sorting this but none have worked. My ipod is jailbroken and running 4.1 (MB model), my youtube is working, my date and time is correct. i live in the uk, any ideas?