Shoutbox

Furthermore to the requirement of NTFS for Sharing Folders, looking through my NT Service List at the moment reveals a new service called "Messenger Sharing USN Journal Reader service". So, that means SF (sharing folders) uses the USN Journal (a log of any changes ever made to the file system) to track changes.

To most people, this isn't a problem. But, by default, for reasons I'm about to mention, the USN Journal feature of an NTFS partition is not turned on by default.
Why? Because it can get *very* big if you do a lot of file-intensive disk operations. Before I knew about how to delete it (which I randomly found out via another task) it was becoming upwards of 500mb on my disc, and becoming quite fragmented at the same time.

So, personally I'm starting to wonder if it's really worth it, just for sharing folders.

Are you sure it's that service used for Sharing Folders? I mean, is there a way to see what apps are using a particular service?