That's what I was afraid of
Thanks for the quick reply. Guess it's time to crack my sheeva open and connect a spare 5V power supply to it directly. Anyone done this before?
A couple of weeks ago I started powering my Sheevaplug from an external 5V 3A AC adapter. I'm using this one:http://www.officebeyond.com/da05030a.html
I got a jack at Radio Shack that the power supply's plug will plug into. Then I removed the old power supply and the AC jack from the Sheevaplug. This leaves two holes where the AC jack was. The Radio Shack jack can then be mounted in one of those holes. There's a 4-conductor cable (two red, two black, if I recall correctly) from the old power supply to the motherboard. Cut it off at the old power supply. Solder the red wires to the positive lead on the jack, and solder the black wires to the negative lead on the jack. That's it.