We have a simple network with 2 windows 2008 r2 servers that are both DNS and Domain controllers. There is a 3rd server that is for hosting remote desktop for the bulk of our users. We recently decommissioned a Windows 2003 server that was doing very little and was not a DC. The network shares seem to drop randomly and cause interruptions in the applications that need to communicate from the workstations to the servers. We've thoroughly checked DNS on Both machines and all looks well, no errors, and no best practice errors show.