Another question: I just set up and configured one of my S3s, and it was hashing fine, until I rebooted it. Now, it never starts hashing. The miner status page never shows anything, it never pulls more than 45W, I'm not getting any shares, but 'top' tells me cgminer is using 2-30% CPU every couple of minutes, which I'm assuming is it checking into the pool and prepping more work (that never gets used...)

EDIT: Got it all figured out.