Hi, The highlighting has changed for this functionality. I finally updated to master (1200+ commits) yesterday and when I use C-c C-x < the entire subtree is now highlighted in bright yellow on my Windows Emacs.
GNU Emacs 23.3.1 (i386-mingw-nt5.1.2600) of 2011-03-10 on 3249CTO Org-mode version 7.9.2 (release_7.9.2-2030-g29a75d @ d:/bin/org-mode/lisp/) This used to highlight only the first heading of the subtree. Highlighting the entire subtree is _very_ distracting and makes working in the org file on the narrowed subtree difficult (for me). I can fix this by changing the face and completely removing the highlight but I'd prefer the old functionality if that is possible. I also noticed that the main heading is now also highlighted in the agenda which is okay I guess but also different from how this used to work :) I haven't tried this on my Linux system at home yet. Will do that this weekend. Thanks, Bernt