I had to reinstall the OS on my iMac. Now when I go to Internet Connect it says "Status: No AirPort Hardware Found." In fact, the little pie-shape that is usually on the menu bar next to the clock and the volume indicator is gone (as is the icon for the VPN connection). I know the airport base is still working, however, because the connection from macbook (where I'm writing this) is unaffected. It's just on the iMac, with the reinstalled OS. Suggestions most appreciated! Thanks.