Microsloth Windows = M = micros~1
The new Evil Empire (the old one was IBM). The basic complaints are, as formerly with IBM, that (a) their system designs are horrible botches, (b) we can't get source to fix them, and (c) they throw their weight around a lot. See also Halloween Documents.
--The Jargon File version 4.3.1, ed. ESR, this entry manually entered by rootbeer277.