Just noticed this in my terminal when I exited out of Fullscreen in a project of mine:
love <Warning>: CGDisplayBaseAddress is obsolete and returning NULL for display 0x42732c0
Don't know if it's a bug or something else. Repeated testing reproduces the message over and over.
Google-fu turns up a page on Apple.com referring to it: http://lists.apple.com/archives/quartz-dev/2010/Apr/msg00021.html
I am running OS X 10.7 Lion. It has no ill effect that I can see. Love 0.8.0 of course.