No more Recent folder in the Apple Menu

The subject says all, nearly !

After thinking, I go to the Dock Preferences pane, discovers the PopupMenu is off, set it on.

The MenuItem comes back to disappears some minutes later.

I powered Off the MacBook, reboot in the repair partition, run Disk Utilities and reboot: it is back now, will all my Recents.

A search on Google let me know this happens to others too. Now you know what to do if this happens to you.

As usual, I do not know what happened.