Woke up this morning out of a horrible nightmare. My mobile phone was ringing, and when I finally found it, there was a very angry message on it from a client who had discovered a hideous translation error in my work. I wanted to explain that yes, I had seen it, but it was in the section with legacy translations that I'd been explicitly told not to touch; but my fingers were so stiff and clumsy that I couldn't type... Aargh!
Of course, in waking life I wouldn't have delivered the translation without saying anything; I'd have contacted the client to ask what they wanted me to do about the error. :-)