I don't know if there is a problem with my account, or a system wide issue, or maybe I just don't understand the rules, but I have been trying to leave feedback about a seller in the Classified section. When I click on the member's profile, then click on feedback, etc. I get a message that I can't leave any more feedback today. I have been trying for over 24 hours so I would assume the restriction is tighter than one feedback per day. BTW, It's positive feedback.