I configured my Time Capsule so the LED blinks when it has activity. As I type this I notice that it is blinking constantly, even though my network is idle. The computer that uses it for backups (not the one I am on) is off, so it isn't running a backup. The cable modem uplink to the ISP is not blinking -- so the traffic isn't from outside.
I looked into the logs and don't see much that is interesting. Is there any way to find out what it is doing?