"...or it is not operational at this time."
That's the error message I get when I try to connect to the Cube from the Mini this evening, either by choosing Connect to Server from Go or by double-clicking the cube's icon in Network. This isn't the first time; it seems to happen once or twice a week, and then after day or so it acts normal again, and so far I haven't found any pattern. Tonight I tried turning File Sharing off and on again, shutting down and rebooting, unplugging and replugging the ethernet cable--still same message.
The 2 computers are connected together with an ethernet crossover cable, but this happened at least once when they were connected by FireWire, too. I'm usually working from the Mini, and when it happens I can go to the Cube and connect in the other direction without a glitch, but a couple of times it's happened the other way around--usually I can connect from one or the other, though.
Can anybody tell me what's going on and what I can do about it?