How do I disable signatures from being posted by default?

[libertylounge]

There are a few threads I found in searching, but none really seemed to be very explicit on what to edit or where

I'd like the default option as being off for new threads, new posts, and quick reply.. while still allowing users to select to post them if they choose

Someone suggested:

UPDATE user SET options=options - 1 WHERE options & 1

But, will this still allow people to display them in the thread IF they select to include it in their post?

[SiriusBlack22]

Go to AdminCP >> vBulletin Options >> User Registration Options >> Then uncheck the "Show Signatures". This will disable them upon registration by default.

[libertylounge]

Nice. Does that change anything for current users?

[SiriusBlack22]

No. That might be out of your hands. :-/

[Tralala]

Disabling signatures from being posted is different from disabling signatures from being shown.