Well, SWMBO's Karma is alive and well, but now my Karma is in trouble, probably terminal.
It will play for two or three minutes, then it quits with low battery. If I plug it in to charge it, it takes two or three minutes to show full charge and the charging cycle stops automatically. Then I can play it and watch the battery indicator slide down to zero in two or three minutes.
I guess I can continue to use it as a music source via the Karma dock, but as a portable device I think it's done for.
"There Ain't No Such Thing As A Free Lunch"