I have an older MacBook (2007, just before they started releasing the unibody MacBooks) that has suddenly started having problems with my external HDD (iomega eGo 500GB)... well not even the HDD, really, but the Y cable. It used to work just fine, no problems, but recently when I just plug the cable into the USB ports (doesn't matter if I do one port or both) I get the USB current overdraw notice - I don't even have the HDD connected on the other end of the USB cable yet, I just plug in the cable and I get an overdraw notice. Seems to be just the cable, too since I can plug in my thumb drive and I have no problem. However, the cable works just fine (usually) with my PC desktops both at home and in my lab. Should I just invest in a new cable or is it something with the MacBook USB ports?