Shib SP config breaking ServerSideIncludes on vhosts not using Shib authentication

[Peter Schober]

* Paul Beckett <paul_beckett at outlook.com> [2013-07-11 10:21]:
> All my Shib configuration in Apache, is contained within virtual
> hosts (not done anything globally). Is there something I need to do
> to explicitly disable Shib on a virtual host that doesn't need it?

I doubt it will make a difference here but did you try "ShibDisable On"?
Cf. https://wiki.shibboleth.net/confluence/display/SHIB2/NativeSPApacheConfig
-peter