Can anyone tell me the meaning of a largish lock icon showing on the Karma screen, and requiring a power cycle to clear? I haven't seen this in person, but the unit I bought as a Christmas gift is beginning to show this behavior every 10 minutes or so. I'm told that a power cycle usually clears it, but today, for the first time, it required a visit from the Magic Paper Clip.

I looked through the online user's guide, and saw no mention of a lock icon. Has anyone else seen this, or is my SO going bonkers?

Thanks,
--Dan.