0 Open Up a Window in Center

When running an application without maximized, Ubuntu always puts it in the left-top corner of the desktop by default, but you are allowed to set a program window to open up in the center of the desktop area.

1. Go to System > Preferences > CompizConfig Settings Manager
2. Select "Windows Management" from the left panel.
3. Click "Place Windows".
4. Change Placement Mode from "Smart" to "Centered", click "Back" and "Close".

Ideally, the window manager in Ubuntu should restore the last known position of an application window, but it does not do that unless an application remembers its own window position. (See reported bugs)