@Andrew - The thing is, you can disable it. I've just confirmed by looking at the source code that you can add define('WP_POST_REVISIONS', false); and it will disable them entirely.

@Jeffro - I checked the source code of WP and inserting that define should disable them completely. Make sure that it's before wp-settings is included. If you're still having problems, hit me up via IM or IRC and I'll check it out.

(Also, CommentLuv should remember me unticking it. It's a pain to have to untick it every time.)