OK I did that. htmldir (and everything) left stock. perms on /var/www/munin
drwxr-xr-x 3 munin munin 4096 2008-05-20 20:30 /var/www/munin
When i access myserver.com/munin I only see this now
localhost.localdomain :: [ Disk Network Processes System ]
and none of the graphs that are displayed as I click around are ever updated.