One developer who frequented a forum I moderated started pitching a fit loudly upon the introduction of Windows XP because his software all relied on the ability to just fudge with other processes' memory at runtime in order to exchange information or do I/O (on files the other process had mapped). Windows XP breaking this profane behavior was, of course, an attack on his liberty and an attempt to break his software.

Nevermind the fact that if you really want to touch another process's memory there IS a way to do it...