Thanks, Brink. That does help enormously. That is exactly the behavior I'm used to in XP, and that I'm certain Windows 7 did up to a couple of days ago. Now, it fails to Select after that second, which is a pain for many operations, such as Renaming.
I tried jogging the single-click setting, and I just tried jogging "hover activation" in CP/access, to no avail, and I have no further idea what to do. It's one of those small things that is a nuisance.