I have two devices in DFM with reachability errors that will not clear. Ping from management station to devices are fine. They show a status of "ACK". The last change for the error was in July of 2006 for both of the devices. I have tried removing one of the devices from Common Services and the device will clear from DFM but after adding it again the same error pops back into DFM. I also cannot delete the device from DFM. The delete button is greyed out. All I can do within DFM is rediscover which does nothing to remedy the problem. Any ideas from anyone?