Hello. I think that my computer is possessed.

I have Windows Live Mail 2013 or whatever the latest version is, got it about a week ago. Now, I have strange happenings. Windows Mail pops up and tells me that it is synchronizing and a few other odd messages that I don't remember off hand. It locks up for no reason whatsoever and I have to force kill the process. It even closes itself for no reason at all. But the best part is when it decides to unpin itself from he taskbar and/or the start menu.

Does anyone know what might be causing this?