help with uri segment and 404 pages

[eluser]osci[/eluser]
Basically with default setup (not allowing the ' char) and error reporting to 0, like in a production environment you'll get a "The URI you submitted has dissallowed characters" error which is 400 Bad Request error, which is good for such a scenario. They shouldn't type such a uri, and since they did a 400 is ok.

I think you are troubled because you are seeing informative error which in development machine should anyway be visible. But as I said in a production environment there would not be an error displayed and you would normally get the 400.