Apologize for having to start a new thread, but I just signed up to the mailing list and since I didn't have the original message to reply to.
What may be happening is that Ubuntu has a default version of org-mode pre-installed in the primary load path directories, so that is what is being picked up and not your latest version. To check that, type
dpkg --list | grep org
and see if org mode was installed by the package manager. If so, just do a normal remove and see if that doesn't take care of it.
Jere