Hi All, Anyone out there experiencing the same issue - and potentially has a method of resolving this? Our company OSX file server (10.8.4) is experiencing a very unstable AFP environment, where AFP crashes (while SMB continues to work). The log file shows repeated lines similar to: [Date] [Servername] AppleFileServer <Info>: TCP Listener returned error on accept [Date] [Servername] AppleFileServer <Info>: TCP Listener returned error on accept etc... This is happening multiple times a week. Sometimes this appears to be entirely random, but on other occasions the following two "precursor" events seem to trigger such events: - Mounting/Unmounting a disk (either physical eg. Firewire or virtual eg. .DMG). - Accessing server via Remote Desktop (via VPN?) This has been the case both with 10.8.3 and 10.8.4 (which we hoped would resolve this). More info about our setup: The Mac server is a 2012(?) MacPro 12 core. It has 64GB RAM and is not in need of any more. The file shares are on a separate Pegasus RAID connected via fibre channel. It is set up in the usual AD-OD relationship with a pair of AD servers (one virtual on the MacPro via VMWare and one on a seperate MacMini). In all cases, the SMB file sharing is unaffected, but the AFP is dropping off until we manually restart the service by entering the following into Terminal: sudo launchctl unload /System/Library/LaunchDaemons/com.apple.AppleFileServer.plist sudo serveradmin start afp Anyone out there who has an idea of what might be going on? Happy for any suggestions! This is causing us a lot of grief. Thanks!