I Just noticed that when I run vim in an X11.app xterm window, the scroll wheel works as you might expect, scrolling through the file. My .vimrc has:
set nocompatible set mouse=aActually it has a lot more than that, but those are the relevant lines. I have used fink's vim for a long time, but Panther has vim and this works with the Panther version, too. Maybe this has worked before but I haven't noticed it. Because of other issues, I have not used Apple's X11 before.
Mac OS X Hints
http://hints.macworld.com/article.php?story=20031106002850195