Hi I'm having an issue with my mac pro (2.66 Quad Core Intel running 10.8.2) since the latest OS upgrade. I have a fixed IP address for this machine and a fixed IP address for the wireless card (obviously a different one) and I regularly get a pop up box stating that the IP address is in use by another device. I've checked the network and all seems fine and nothing has the same IP address. I have changed the IP address twice and even with the new IPs I get the same message but only rarely. The DHCP range is well above the static IPs I use. Anyone seen this before or since the update or can offer a solution? Ta.