I bought an iMac a little over a year ago. It's running Version 10.5.5 and for a Processor: 2 GHz Intel Core 2 Duo. I noticed my internet had been running ultra slow the past few days and didn't know why. I haven't paid attention to it much because I haven't been around. Today I started messing around with my cables, restarted the comp, shut it down.. a lot of stuff just trying to figure out why it was running so slow. When I unplugged the Wireless Router to try and run an Ethernet cable directly from my cable modem to the computer I couldn't access the internet at all. When I use the same Ethernet cable and connect only the cable modem and wireless router I pick up a signal on AirPort and I can access the internet. So I know my problem is not with a bad Ethernet cable.. the only explanation is that there is a problem with the Ethernet port in the back of the iMac. Does anyone have any experience or tips with this problem?