Starting apparmor on a Ubuntu Lucid Lynx gives the following:
user@host:~$ sudo /etc/init.d/apparmor start
* Starting AppArmor profiles
* AppArmor not available as kernel LSM.
...fail!
Googling a bit, I found the following bug report - marked as fixed -:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/375422
Which seems to be my exact case. My kernel is 2.6.32-21-generic. Any idea on how to solve the issue?