Now it is working again. The reason it did not work is indeed because they changed the format of the config file

/etc/security/pam_mount.conf.xml

in Ubuntu 11.10. So, I backed up my old *pam_mount.conf.xml* and uninstalled the pam-mount module via

apt-get remove --purge libpam-mount

and reinstalled it using

apt-get install libpam-mount

Now I opened the new

/etc/security/pam_mount.conf.xml

and inserted this line,

<volume user="user" fstype="crypt" path="/dev/sda5" mountpoint="/media/personal" options="fsck,relatime" />

from my old config file into the volume section of the new config file.

This is how it look now

<?xml version="1.0" encoding="utf-8" ?>

<!DOCTYPE pam_mount SYSTEM "pam_mount.conf.xml.dtd">

<!--

        See pam_mount.conf(5) for a description.

-->



<pam_mount>



                <!-- debug should come before everything else,

                since this file is still processed in a single pass

                from top-to-bottom -->



<debug enable="0" />



                <!-- Volume definitions -->



<volume user="user" fstype="crypt" path="/dev/sda5" mountpoint="/media/personal" $



                <!-- pam_mount parameters: General tunables -->



<!--

<luserconf name=".pam_mount.conf.xml" />

-->



<!-- Note that commenting out mntoptions will give you the defaults.

     You will need to explicitly initialize it with the empty string

     to reset the defaults to nothing. -->

<mntoptions allow="nosuid,nodev,loop,encryption,fsck,nonempty,allow_root,allow_ot$

<!--

<mntoptions deny="suid,dev" />

<mntoptions allow="*" />

<mntoptions deny="*" />

-->

<mntoptions require="nosuid,nodev" />



<logout wait="0" hup="0" term="0" kill="0" />





                <!-- pam_mount parameters: Volume-related -->



<mkmountpoint enable="1" remove="true" />





</pam_mount>