I have installed the forum at my website and it works fine, but i have problems when i try to change a post if i am logged in as a normal user. I don't have any problems changing a post if i am logged in as administrator.
Are you saying you can't edit posts you made as the "normal user" (i.e. the one who posted) or are you saying you can't edit other posts as a normal user? The first is a problem, the second is a feature.