10 Track replacement (hopefully not in front of our train...)
9 Somebody's jumped in front of a train
8 There's been a rockslide (oops)
7 We are behind a slow train
6 There is a signal failure
5 We are waiting for the Train Manager (apparently he waves flags)
4 We are waiting for the train driver (or one to replace the one who didn't bother to turn up... sigh)
3 There are high winds (what, did they feed the train crew beans again?)
2 The front carriage is no longer working (well it was five minutes ago)
1 There's a cow on the line (mooo)