Dear Umbraco experts, 

we ave set up a site using version 4.0.3, with a load balancer, with one admin server and two public-facing servers.

Publishing works fine, any public access modification is properly written into the access.xml file, and the file access.xml file is properly replicated on the non-admin servers.

But the public access modifications are not effective on the non-admin sites

Refreshing the web.config on the non-admin sites forces the application of the right access rights. 

I guess this is due to a memory caching of the content of the xml file, and changing the file without forcing the reloading doeesn't do anything.......

Is there a way to dynamically update the public accesses memory cache on the non-admin sites each time it changes on the admin site?

Thanks