Comment 45 for bug 346912

My solution: purge the tracker data (if you don't know how, see above) and disable tracker (System->Preferences->Search and Indexing, clear Enable Indexing). Personally, I consider the capability a waste of time and space. Sorry, Jamie -- that is not a dig at your tracker; on every OS that has offered the option, I've always turned it off.

What I have not yet found is where tracker.cfg gets initialized from, so that new accounts don't start with it enabled.