deployment.cache.enable | Specifies if cache should be disabled.
I've come across many settings that aren't as obvious as the name suggests (or surrounding text would have you believe) but that one takes the biscuit - actually being the reverse of what it seems.
Anyone else got any others?
 Oracle Enterprise Manager, I'm looking at you. You could have easily clarified your purpose with better-written text in the web page. It's not hard.
 /etc/ftpusers, /etc/passwd - even filenames can play too.