Home directory mounted read only file system

I'm using Ubuntu server 9.04

My home directory mounded Read only filesystem

$ ls
Access-Your-Private-Data.desktop  README.txt

$ cat README.txt
THIS DIRECTORY HAS BEEN UNMOUNTED TO PROTECT YOUR DATA.

From the graphical desktop, click on:
 "Access Your Private Data"

or

From the command line, run:
 $ ecryptfs-mount-private

How to recover?

I tried it

$ ecryptfs-mount-private
Enter your login passphrase:

Warning: Using default salt value (undefined in ~/.ecryptfsrc)
Error: Unwrapping passphrase and inserting into the user session keyring failed [1]
Info: Check the system log for more information from libecryptfs
ERROR: Your passphrase is incorrect

From serverfault ffffff

• From the command line, run:

  $ ecryptfs-mount-private
  

  or click on "Access Your Private Data" on the graphical desktop.

  ffffff : Thank you so much. I tried it , but I can't recover
  From womble

• As it says, check what's in the logfile

  Info: Check the system log for more information from libecryptfs
  

  ffffff : Thanks a lot!!. How to check he system log for more information from libecryptfs, sorry I'm beginner for linux
  From JamesHannah