Hi Rev. Voodoo, thanks, I figured it out. I simply dragged the panels back up to the right column, but they only stuck after I figured out at which moment I can let go of the mouse button. It requires patience and precision.
Similar problem here. WordPress 3.1 does not want to display two columns any more, it jams both columns into one so the ‘update’ button is completely at the bottom of the page. Any ideas?