Hi There, Since upgrading to 10.8 my Link Aggregation has stopped working, this being bonding Ethernet One & Ethernet Two together. This is on a MacPro going into a Netgear GS108T switch. When starting/ restarting the machine; Ethernet One & Ethernet Two interfaces are lost and the Link Aggregation remains, but "Not Connected" the only fix is to delete this and re-add Ethernet One and Ethernet Two, then re-add the "Virtual Interface" Link Aggregation - then it works again, until the next restart. If I don't use an 802.3ad bond then the individual interfaces remain active and available upon restart. I logged a case with Apple support locally, but that is frustrating and torturous and I don't believe it has made it past their first level... "Have you restarted?" Yes. "Ok, bear with me, have you tried restarting" Yes, as I just told you. "Can you delete the network PList and restart" Yes, and the issue remains. "Ok, have you tried restarting..." Grr..