2011/3/25 Bernardo Barros bernardobarros2@gmail.com:
==> Edit the /etc/security/limits.conf to allow you (user) to have rt priviledges
@audio soft cpu unlimited @audio - rtprio 100 @audio - memlock unlimited
And add yourself to the audio group.
Forgot to say: NEVER start anything (jack, pd etc...) as root, it's not safe. This configuration above is enough.