None of my /commands work...

Something is wrong with my WoW starting from 2 days ago. None of my /commands work at all. I can click the bubble and join party chat from there and I can also hit "r" and reply to /w's but I can't seem to get anything to work by just typing the /(whatever) in the chat window.

I can type:

/p

but then it won't let me hit enter.

btw, I was going to just post this on the wow forums but the login server is currently down...