i have the same problem, the think is that on my others domein up update my wordpress to 3.0 and the update plaugin via wordpress works just fine. Recently i’ve bought a new domain and i have this issue: Could not create directory. /public_html… there is no response to this problem? I’ve try to delete de ugrade folder create a new one with the same name, put chmod to 777 and still i have the same problem….is there a way to resolve this?
