This was fun (well, for a language nerd, anyway). I spotted this eggcorn in an article about Wisconsin's education-destroying governor:  "... or who serve at the leisure of these appointees." I was really baffled because that only works as an eggcorn if you pronounce "leisure" to rhyme with "pleasure" - and what American does??? Surely an article about Scotty-boy Walker has to be written by an American? Then I scrolled up and noticed that it was in the US Edition of The Guardian. How funny that I went through that whole train of thought based on an assumption about the dialect of the writers. (BTW, 5,020 results for "serve at the leisure of" on google.)