Hi Guys. I have a 2011 27" iMac which i prefer to use on Ethernet. about 2-3 weeks ago i noticed my Ethernet would stop working and appear in the network settings as "Ethernet cable not plugged in" even though the cable is plugged in. If i restart my mac it seems to work fine for a few hours then tell me the cable is disconnected again. Ive tried a different cable and still no luck. Please tell me its software related.