Hello.
Just to be sure, by DFS you refer to Distributed File System functionality as described at
http://en.wikipedia.org/wiki/Distributed_File_System_(Microsoft)?
As for your second question - where these changes are not visible? In back-end (for example you don't see updated page template object in Site Manager / Development / Page templates section), or on live site? In second case, the problem could be connected to loading old data from cache, which would indicate the web farm module is not setup well.
Thank you in advance for clarification.
Best Regards,
Radek Macalik