Patrick and myself found a bug in the KZ map cg_d2block_ez. Turns out that in theory there is a shortcut to finish the map way earlier as you can see in this video (check from 3:20):
Spoiler!
However, Patrick and me tried to mimic what this guy did and the server crashed. We have tried 3 times and all 3 times it's causing KZ to crash. I'm adding a demo of Patrick trying to perform the shortcut while I record: http://www81.zippyshare.com/v/d5W1av2y/file.html