I have to agree. My travel has been 99% delay free (almost always on TATL flights) until the last couple, where the YEG-LHR flight has been delayed by 4 hours both the last time I flew, and recently when a friend flew. The identical delays seems suspicious to me. [Sidenote - my delay didn't actually happen. But they send a previous day notice to everyone that the flight was delayed, then we all had to sit there with the plane ready for an OT depart because they had told everyone to come later...].

Return flight same trip - 2.5 hour delay because of climate control issue (took 2 hours for someone to think of turning an engine on given the umbilical was broken).

Definitely both wierd and a recent occurance.

Peace.