I've been having issues with Time Machine Spotlight searches. They seem to be flaky. Anything that was present on my hard drive at the time of the initial backup seems to be found just fine, but anything added later doesn't show up in every iteration. For instance, I downloaded some PDFs off the internet a few hours ago, and Time Machine has backed up twice since then, but they don't show up in either of those backups in Time Machine, although they do show up in a normal Spotlight search. I don't have the drive in Privacy in the Spotlight prefs. Also, on a somewhat related note, does anyone have the ability to search in Mail? Any time I enter Time Machine from Mail, the search box goes gray.