Tonight there was more disruption on the Aire Valley lines out towards Skipton from Leeds. This was variously described as "signalling problems" or "points failures". Who knows, who cares? But it does seem to me that this location - Apperley Junction - is particularly prone to outages for various causes. So two questions: is it (or is it just a disgruntled commuter's perception); if so, what is it about that stretch that makes it so?