[mdlug] Lost window decorations / window manager

[R KANNAN]

Hello,

Something weird seems to have happened when I logged out of Mythbuntu
12.04 desktop. When I logged back in the application windows do not
have decorations (minimize, maximize & kill  buttons on right top) or
frames. The window manager does not seems to be up.
Settings->WindowManager does not bring up anything. (I am using
Mythbuntu Xfce).

I even tried rebooting with no luck.

Any ideas on what could have happened?

Thanks