Update 'user titles and ranks' cron job?

[BadgerDog]

I have a a problem with v4.04pl1, that has existed since at least v3.6 that I can remember.

I either have to LOAD and SAVE the user record in AdminCP or run the "update user titles and ranks" manually, to get a rank graphic for a member when he gets added to a new usergroup, to begin appearing in any of his posts (postbit_legacy). The new usergroup gets checked fine and saved, but the associated rank graphic (or text description) doesn't happen.

It's also messed up in reverse. If a user's subscription expires, vBulletin correctly changes the usergroup, but the rank graphic associated with the expired usergroup continues to appear in postbit etc, until I manually SAVE the user record in AdminCP or run the "update user titles and ranks" manually to get the now expired rank graphic for the member to disappear.

I came here and searched the forum for a simple way of having the "update user titles and ranks" job run nightly as a maintenance function, as I'm really getting tired of having to go in and SAVE every user record after they get a new usergroup checked off, or their subscription expires.

Can anyone provide me with a CRON JOB that I can run nightly to automatically perform the "update user titles and ranks" function, or alternatively, provide me a fix for this long standing bug?

Thanks in advance ...

Regards,
Doug