Text converting from caps to small, by itself

[vbsm]

Is there a bug or a feature that is converting all posted capital text into small case for users?

[Mark.B]

AdminCP > vBulletin Options > vBulletin Options > Message Posting and Editing Options > Prevent 'SHOUTING'
Set this to "0" to disable it completely.

[vbsm]

Thanks, but a user can post one post in caps, and the next post cannot. Shouldn't it be the same?

[Mark.B]

Depends how many letters you had it set to.

Make the change I mentioned above and see if it stops happening.
That said, there's no foolproof way to stop this sort of thing by automation - you should really be all over people who do this, explaining that they should not do it. If they persist, edit or delete their post. This is community management stuff though really.