Live Mail

I just updated my windows mail to windows live mail. Some how it deletes some messages before going into inbox. For example, an email from my sister with a doc attachment showed in unread mail folder and then disappeared. Same thing with an email from my bank that had no attachment. I have set up the view to show all. I am operating in vista home premium 32 bit. As I do not know how to setup live mail forum, I am posting here.
I am confident that there will be help available here.

Best Regards
Noor Motani