Only Super user can login from Frontend

I don't know what's happening. Only super user can login from login in frontend. All the others even admins cannot, although all menus are set to public. The passwords are correct, triple-checked, the menus are public, i have tried many times. Only super user cal login.

Why? What's happenning?

Did you check permissions in global configuration

yes i have checked all tthe rights. Everything is set to ALLOWED and for admins and for registered and for managers. All my categories and articles have PUBLIC permissions. It is not the problem

When i try to login from multiple users i have the exact same irritating message:
You cannot access the private section of this site.


But it is not private! it's all public. Only super user can login

please help

You use joomla 3.2 version?

yes

maybe you need to do this:

docs.joomla.org/Fixing_the_assets_table