Merion, There's much to be said for serendipity - particularly if you can organize for it! I would have been interested to change the frequency of Airport as a way of investigating the effect of the Emac - You didn't try that did you? David. On 14 Dec 2004, at 9:05, meirion roscoe wrote: > To make a bit of room to get at the gubbins in the cube once more, I > had to take an E-mac off my desk that had been there for a couple of > weeks while I sorted it out ready for my business. As soon as I moved > it Voila - problem solved. The rear of the E-mac was pointing at and > about 6 inches away from the cube. I'm thinking that maybe there was > some unshielded Rf (CRT maybe_ emitting at a specific frequency and > disturbing the network. The E-mac has no airport card, was not > hard-wired to the network, no peripherals shared with the cube and the > only cable out of it was the power cable to a shared socket with the > cube.