DVR Channel Guide showing blocked channels on "Free to Me" setting

One of the things I like most about the new Contour 2 DVRs is the "Free to Me" setting on the channel guide.  However, following the free Showtime weekend we recently had in the Ft Walton Beach, FL area,  my guide still shows 3 of the 6 Showtime channels in the guide (1240, 1244, 1248 - again in the FWB area) and if I select them, it tells me, as expected, that I need to subscribe to Showtime.  I've changed the guide to "All Channels" and other selections, and I've also restarted the box a couple of times to see if this might clear up the glitch.  But it still shows those 3 Showtime channels in the Free to Me guide.