Can I disable my WP users(publisher) upload files in the post?

[jimmychuang]

Can I disable my WP users upload files in the post?

I want to allow them upload their author picture, but I don't want them upload files and flash movies, any plugin can do that?

[ergophobe]

Tweaking allowable file upload types [google.com]

Allow author avatars in WP [google.com]

[jimmychuang]

Thanks