Comments posted for registered but not for public?

[fabio42170]

Hello !
Can anyone explain to me the difference between public and guest when fiddling with permisisons ?
I naively thought that when you modify the permissions for the public role, it would concern all the permissions of the comments regarding the articles which are published for public users?
For example, on my website, if I want public users to publish comments on all articles, well, I have to turn "post comments" to ON in the guest permissions, otherwise, it does not work. Weird, innit?
Or else I did not get a point, but it seems that the Jcomments component does not follow the Joomla logics on that point...
Thanks for your lights.
Fabio