At the risk of revealing myself to be a computer muggle, I will start by saying that I do most of my code writing/editing using NEdit. I have been using NEdit for most of a decade. I know I should learn Emacs, but I just haven't gotten around to that. I like NEdit a lot, except for one fairly serious problem ...
Seemingly at random, when I have multiple instances of NEdit running simultaneously, the copy/paste function suddenly stops working on all instances. Closing all NEdit sessions...