How to stop user change topic title like vbulletin ?

[The_BlacK_MOON]

I want to stop user to change the main topic title. In vbulletin user can not chage topic title while editing.
In phpBB user can, but I want to stop it because the url re-write is enable with advanced mode so if user change their topic title the url will change too, which will create problem

Any one can help??? please.

[Peter77]

In ACP Post settings> Posting>
Limit editing time:

Limits the time available to edit a new post. Setting the value to 0 disables this behavior.

Works same for topic starter. If this is still not what you need, then you can always ask for a MOD request at phpbb.com support forum.

[The_BlacK_MOON]

Thanks. this is a better option.
but im thinking to create strict rule first, about this on my board, that user must not change topic title