Hi, I just updated org-mode to the latest version from the git repository (commit: 3785722e9255b552c62e594b73164330404a70a1) and noticed that syntax highlighting is no longer working in Aquamacs Emacs v2.0 (Emacs 23.2.1) on Max OSX 10.6.5. It is still working in the command line version of emacs that comes pre-installed on the Mac and on other modes in Aquamacs, so it looks like this is a specific issue to do with the interaction of org-mode and Aquamacs. Matt Leifer