Maybe you should combine the plugins
User Permissions
http://urbangiraffe.com/plugins/user-permissions/
and use drain hole as download manager
http://urbangiraffe.com/plugins/drain-hole/
Maybe you should use wp23_related_post
it`s compatible with wordpress 2.5.x
WordPress tabs and slides has been fixed, is compatible for 2.5.1
Abdul Ibad..
