Not sure if this should be in the server 2008 thread (but as our network is solely 2008) i thought it was a good place to start. PCs in certain OUs won't allow users to use USB flash drives. I have checked the group policy for the OU and there is nothing there whatsoever that specifies the restriction of removable devices. Student and staff are restricted, but if they use another pc in a different part of the school they are able to. I am finding this totally bizarre. Are there any local group policies that could be restricting this.