I just update from NAV 4.3 to 4.4.3. All seems works but I get in the WatchDog the error message "ARP records have not been collected in the last 2 days, 13 hours" All services are ruungin (see below) and I can't find any documentation about this error. Any suggestin will be appreciated. Davide. # sudo nav info activeip (cron): Collect active ip-adresses for all prefixes alertengine (daemon): Dispatches alerts according to individual alert profiles. eventengine (daemon): Reacts and creates alerts from events on the event queue. ipdevpoll (daemon): Collects SNMP inventory data from IP devices. logengine (cron): Regularly check the syslog for network messages and update the logger database mactrace (cron): Checks NAV's cam log for watched MAC addresses maintengine (cron): Regularly check the maintenance-queue and send events to eventq netbiostracker (cron): Regularly fetch netbiosnames from active computers pping (daemon): Pings all IP devices for status monitoring. psuwatch (cron): Monitors the state of redundant PSUs and fans servicemon (daemon): Monitors configured services. smsd (daemon): Dispatches queued SMS alerts. snmptrapd (daemon): Receives and processes SNMP traps and notifications. thresholdmon (cron): Monitors your Graphite metrics for exceeded thresholds topology (cron): Detects the topology of your network. # sudo nav status Up: activeip alertengine eventengine ipdevpoll logengine mactrace maintengine netbiostracker pping psuwatch servicemon smsd snmptrapd thresholdmon topology