We came across this problem a couple of weeks ago and raised it with Capita who initially couldn't find anything wrong and suggested the Doc Server install but that didn't work. We than managed to recreate the fault on the Green Abbey data. From our testing we could only get System Managers to see the bulletin attachments, teachers and admin staff were unable to. We've passed this back to Capita with the information that we found and they are "investigating" the problem, unfortunatly we haven't managed to get a progress report from them since just that they are still "investigating" it.