I just do update and upgrade, but I miss close, minimize and maximize button along with top border title bar after that.

I did metacity --replace and unity --reset, It didn't work for me.

Also, I set in the gconf-editor default metacity>general to close, minimize, maximize:

and it didn't work.

The last, I unchecked windows decoration in Compiz, and it didn't work too.

Any help will be highly appreciated, and I attach a screenshot of a window without the title bar as one example of my problem.