Sometimes the error messages thrown by IPB can be a little bit abrupt and not very user friendly. Particularly those that involve viewing permissions. Perhaps these could be made to be a bit more helpful to the end user in a future version? For example instead of the current "[#103139] You do not have permission to view this forum." how about offering up some reasons as to why this might be the case. e.g "not logged in" followed by links to register or log in. etc.
