Hi guys, At work we have a network of approximately 30 machines, around 15 of which are iMacs of varying ages. 2 of these machines only have massive problems with the internet access. All connections are wired. They all run on "Using DHCP with manual address" and we specify the addresses within our scope. All other iMacs are specified within the same scope and suffer no issues at all. The issue is that whilst Ethernet and DNS are still showing as green (Connected) no internet access is possible. Usually it either takes a restart or if this doesn't work we have to switch them to DHCP, let them get an IP which works for a short while, until the same thing happens then revert to their original manual IP. Basically these 2 iMacs switch between 2 IPv4 states depending on which one works at the time. It's always the same 2 iMac's and there appears to be nothing obvious wrong. As I say, in Settings -> Network -> Ethernet is showing connected/green at all times and DNS, IP, Gateway and Router are always populated with the correct settings, it's just the internet disappears. Naturally we've tried many browsers and believe it's not a browser issue as Mail also signals that there is no internet connection with the warning triangle. Can anyone shed any light on this as currently these 2 iMac users are getting incredibly frustrated with switching their IPv4 configuration state several times a day and/or restarting their machines. Cheers!