~ $ ecryptfs-setup-private --undo        [pts/0 - 8H 0J 0R - 2010-09-14 11:25:51 - 0+13:31 - 1.75 2.08 2.00] 

In the event that you want to remove your eCryptfs Private Directory setup,
you will need to very carefully perform the following actions manually:

 1. Obtain your Private directory mountpoint                                                                 
   $ PRIVATE=`cat ~/.ecryptfs/Private.mnt 2>/dev/null || echo $HOME/Private`                                 
 2. Ensure that you have moved all relevant data out of your $PRIVATE directory                              
 3. Unmount your encrypted private directory                                                                 
   $ ecryptfs-umount-private                                                                                 
 4. Make your Private directory writable again                                                               
   $ chmod 700 $PRIVATE                                                                                      
 5. Remove $PRIVATE, ~/.Private, ~/.ecryptfs                                                                 
    Note: THIS IS VERY PERMANENT, BE VERY CAREFUL                                                            
   $ rm -rf $PRIVATE ~/.Private ~/.ecryptfs                                                                  
 6. Uninstall the utilities (this is specific to your Linux distribution)                                    
   $ sudo apt-get remove ecryptfs-utils libecryptfs0