Thx.
That did fix my problem.
You're Lucky
My clock doesn't stop, but it does lose time when powered Off. Loses hours overnight. No Sansa f/w update has fixed it, and no RB f/w has fixed it. So I would assume a problem with the h/w itself, not a f/w issue.
Possibly related to the fact that it loses battery when powered Off! If it has a reasonable charge, I power off, and leave for 2 or 3 days, It is drained. Won't power up even briefly, without recharge.
It has been this way from Day-1, so maybe it is an original bad battery causing both issues?