Green Line: Worst subway in the world?

Anybody else waste a significant amount of time on the GL this morning? I was stuck at Park Street for a good half hour, but it sounded like some people had been there quite a bit longer.

And I'm serious about the aforementioned question. There may well be a worse subway (or subway line) out there. I just don't know what it is.

(Apologies to anyone who expected a media post.)