I would think that is in a "rotation" of liners/jingles in the system to play during that show. IMO, someone should have checked it since Christmas to see what was in there. Didn't they get a new PD a few months ago? He didn't look around and check things since he took control? The Tesh weekend replay on Saturdays from 6-9am hasn't ended until about 9:15am for ages, and the sad thing is somebody live's on right after it usually.
Not that they are anything close to perfect, but they are a little better than their competition who has had their share of issues also, especially recently, as discussed elsewhere.
Just goes to show that all of these stations are depending on computers to run things and don't even bother having a human even occasionally check behind them. Computers aren't perfect.