I'm a developer and when we're in the final stages of our periodic scrambles to meet our UAT release deadline and get Safety to sign the damn thing off, each day I'm holding out for around 2.30 pm when I know that the offshore testing team will have knocked off for the night and I can relax and get some peace to work through the fixes without another "Well, if you follow this sequence of events which no sane person could have predicted then the whole thing gets screwed up, pls fix asap" defect arriving in my inbox. But then of course the offshore team get a 3 hour headstart on me in the mornings, so I log in to a stack of "Yep that one is fixed but then there's this mad scenario..."