Just so we’re clear here about which type of train is which, here’s a quick guide…
Firstly, this is the train that’s in the news today: the Siemens. Their brakes have problems. (Update 2012: The brake problems have apparently been fixed.)
This is the X’Trapolis, about which the Rail Tram and Bus Union recently said: ”You get what you pay for, and they did: these trains are cheap and nasty overseas shit and drivers aren’t happy with them.”
And finally, this is a Hitachi, from the 70s. They don’t have any air-con, and they also don’t have CCTV or passenger intercoms. The good news is they are known for being very reliable. The bad news is most of them got scrapped, so there’s only half-a-dozen left, which is why we’ve got such a shortage of trains now.