What just happened with Mail?

[Monster]

something similar happened to me yesterday, and I noticed my desktop was back to where it was before I cleaned it up, after a restart it mail back to the way it was supposed to be, and the desktop went back too, items I had previously deleted which had come back were gone again, and others that I had moved around, into folders, etc., were back to where I had put them.

not saying this will help you at all, but that's what happened to me, it was a little weird.