Root getting "Permission Denied" but is superuser

Hi All

A few hours ago I noticed that despite having the permission Superuser (and nothing else) RT root is getting “Permission Denied” errors when attempting to change permissions.

I suspect this may have happened when I upgraded from 3.4.4 to 3.4.6 yesterday morning.

Help?

Running 3.4.6 on Ubuntu 6.06, MySQL backend.

Jason