@Petra imagine unclear organisational structured, political warefare between managers, the FUD and lack of communication between teams (often within teams!) resulting from that, dead-ends in ticketing systems, holes in monitoring, unkown, or non-existent owners of projects or systems.

now, make a change, reboot or kill of a system that's been down for 3 weeks, you'd think you're cleaning up, but suddenly someone comes up to you and is screaming in your face. it's fun.

(it's actually the reason i'm on vacation for 2 months now)