As stated here:
http://forums.postnu…e=viewtopic&t=40653
Quote
The main reasons are all security related. When a form is secured using authid a user can't
1) The form can't be faked by inserting things into the get/post array.
2) The form is securedfrom flood protection - i.e. multiiple submissions of the form.
However if a database entries are permission checked, what's the point of the authid? Also stated in the post referenced above is the fact that the authid protections are easily bypassed. So all the authid really seem to do is annoy users when they try to use multiple tabs/windows to, for example, vote in 2 seperate polls. There should be no reason to limit the user to one tab only and us admins from using the back button to submit multiple similar articles, downloads, etc... without having to constantly hit reload.
