This was a cause for some concern.
It wasn't consistent, though, and I was able to finally queue up some tunez for my walk, and on the light rail ride in to work I used it some more and it was back to 100%. The unusual behavior this morning is still a slight worry, but it can also be chalked up to my attempting to use the device at 6 in the morning. :) I can barely manage to walk properly at that time, so not getting the right results out of the pod isn't entirely outside the realm of the expected.
