Google Desktop privacy?

Never mind the well-documented queries over Google Desktop privacy as we blur, inevitably, the boundaries between local data and online data , there are some local privacy issues too. If Google Desktop Search has permission to crawl the whole disk, users will be able to search one another's documents, even if they can't. Brings a new dimension to the wallet search - I look forward to the first case citing Google Desktop Search in a divorce case. While less interesting intellectually than the "big issue" of commercial companies learning about our private data, I can foresee more obvious personal damage in the shorter term...