Both the log messages as well as your receiver LED hint at a source of 
IR light source other than your remote control. I think a software bug 
can pretty much be ruled out by your observations of the LED alone: 
that LED can't be controlled by software and is directly tied to 
incoming IR signals.

I remember a single other report very similiar to yours, where the 
source turned out to be a newly installed mirror that reflected 
daylight from the outside right onto the receiver. You can try to 
isolate the source and direction of the IR light by moving a cardboard 
sheet around the receiver and check when it stops.

Best regards, 
Felix Schwarz