http://www.theregister.co.uk/2012/11/23/why_os2_failed_part_one/
Hilarious article
"After Microsoft lost the source code for the actual build of OS/2 we shipped, I reported a bug triggered when you double-clicked on Chkdsk twice: the program would fire up twice and both would try to fix the disk at the same time, causing corruption. I noted that this “may not be consistent with the user's goals as he sees them at this time”. This was labelled a user error, and some guy called Ballmer questioned why I had this “obsession” with perfect code."
