Several things are turned on by default in Vista. Disk defragmentation is scheduled, although MS like to choose crap times to schedule those things for, usually 2am etc, so probably not that (yet). You are almost certainly indexing files. The indexer is much more aggressive than it's ever been before.
If you'd been following its release, you'd realise that it was not in fact ready for it. Shock, horror.
Surely you're joking? It's only been out a day or so.
If you'd been following its release, you'd realise that it was not in fact ready for it. Shock, horror.