Wireless Nay Sayers
In past wireless LAN deployments, I've encountered some people in companies who are totally against the implementation of mobile wireless solutions. The trouble is that these "nay sayers" can cause other users to become negative regarding the implementation. This often deteriorates the benefits of the system. As a result, I highly recommend, early in the deployment project, to promptly handle those against the deployment. One counter measure is to try including these people in the early phases of the project, such as when defining requirements and when considering design alternatives. If they're left out of the deployment process, negative feelings will intensify.