Then we'll likely need to access the admin area of your site to investigate further. In addition to the Javascript Facebook library not showing, the following tags are in your HTML:
<SCOpenGraphPlaceholder />
<SourceCoastProviderJSPlaceholder />
Those tags are inserted by JFBConnect, but then removed later by our system plugin. For some reason, that's not happening on your home page.
On further investigation, I just tried going to the following page:
/en/community/groups/display?sort=alphabetical&categoryid=10
On that page, the Javascript library *is* being included correctly and the tags above are properly removed.
That could mean that
a) There is something specific about your home page that's different
b) The page above wasn't ever cached before, and so when I visited it, the caching plugins didn't prevent the proper execution of code
Not sure what it is, but that may help narrow things down. Beyond that, I'd have to ask for Super Admin credentials to your site so that we can investigate what's going on further. Again, it definitely looks exactly like a caching issue, which we deal with frequently around here.. but from your information, I'm not sure what it is that's causing it, since it sounds like you've disabled caching.
Thanks,
Alex