First, open the power manager. You can click on the power icon in the panel and select "preferences"
or it should also be in Menu -> Preferences -> Power Manager. De-select "Lock screen...." under the "Extended" menu tab as shown in the picture above.
Second, open screensaver preferences. Menu -> Preferences -> Screensaver. Again, de-select "lock screen..." at the bottom of the window.
Let me know in the comments if that helped!
