I have an iMac, macMini, macBook Pro and a Qnap NAS. They are all connected through a Netgear Gigabit switch, but my iMac will not connect at 1000Base, only 100. All the other stuff on the network works fine. It isn't a cable issue, as the macMini is on a 25m run of cable and that works fine. I have tried different ports on the Netgear switch, but this doesn't make any difference either. I have read of others with this problem, but there doesn't seem to be an answer. Does anyone have any experience with this problem, as copying 20+ GB of files between the iMac and the server takes ages.