Over the last few weeks I have noticed that "No current program" is showing frequently all through the guide on my 3510 pvr.  For example today (Sunday Oct 27) on ch 35 CTV Life the guide shows No current program all day until midnight.  Other examples are peppered throughout the Guide for single hour slots.  The main issue, other than not knowing what is on, is that recording is not possible without the show listing available. So I could not record anything on CTV Life today or tonight.  

I have unplugged the pvr to see if the missing listings will load but they don't.  Any explanation for this???