1) Is your read only copy on the intranet instantly updated the moment a document is updated in your controlled system?
This question made me think about a possibility I hadn't thought of before. It might be possible, through the phenomenon of browser disk-caching (and the user settings for same) for an intranet-based system to produce an obsolete (i.e., cached) version of a document without the user's being aware of what is happening.
Short explanation: Browser (Internet Explorer, Firefox, whatever) performance is enhanced by caching of web pages (or portions of them) on the local hard disk. This means that after the first time a page is downloaded, the browser, before downloading the same page again, will look in the local cache for the information and load it from there, which is much faster. There are user settings (under Internet Options in IE, for example) that control how this happens: Always download from the server, regardless of cache content; check the server version first to see if it's different from the cached version, etc.
It's conceivable that if the browser cache settings aren't controlled, a user could load an old version from the cache while thinking he's looking at the most recent version on the server.
Just some food for thought, speaking of which, it's lunch time
