Hummm ! When I loged in, a window opened telling me I have some messages in my mailbox. Unfortunately I couldn't check any !

Also my mailbox is supposed to be empty !
Moreover, I requested people to be my buddies and I can't believe that no one of them didn't reply : once I did a mistake and I requested a person for a second time and the window told me this person was YET my buddy ! But in my profile I see nothing !!!
Can somebody tell me what I can do ?
Thanks a lot !
