‘ardvark’, I read your thread and the only thing I find when I open my profile is “Account Related Settings”; I find none of the things that are mentioned in “Settings Normally Available to Profile Owners” in the help system…
The short answer is no you don’t own your own profile.
There are restriction on the forums for new members (less than 20 posts) on what they can do.
They can’t use the PM function to contact other forum members.
They can’t edit their profile over the basic setup they did when joining the forums.
This is because of a spate of abuse of the PM function to send spam of an objectionable sometimes p-o-r-n-o-g-r-p-h-i-c nature.
This also included signature (part of your profile) spamming giving links to objectionable/commercial web sites and other ad blurb.
So to stop the drive by sign up to the forum and spam away, these restrictions were introduced, unfortunately because of the actions of these cretins we all suffer as a result.
This may be why you don’t see the full list of option in the Profile settings, see image.