Trying to switch factions BUT IT WONT LET ME

Q u o t e:
Ok so im trying to switch factions but it keeps giving me a "A character cannot change factions while there is mail in their mailbox or en route to their mailbox. " error i already deleted everything off my mail and theres 2 msg's that are just there gray..wont let me delete em ..other than that i think thats preety much whatll fix my problem.

On this character?

I'm seeing quite a bit of mail here - some with attachments from the AH.

Are you running any kind of mail mod? That may be interfering in what's displaying for you. Have you tried a reset UI?

To do a full reset UI, you will want to save your addons in another spot if you wish to preserve them.

Then rename/delete or move your WTF, Cache and Interface folders while WoW is shutdown. Reboot your system.

Note, if you are running Vista make sure your permissions are set so it does not undo your changes.

More detailed instructions for different operating systems, including Macs are here.

http://us.blizzard.com/support/article.xml?articleId=18761&searchQuery=reset%20UI&pageNumber=1