Following yesterday's discovery that iOS 4 on both iPhone and iPad are actually tracking a users every location, on the fly, at every moment, the jailbreak community has beaten Apple to the punch once again and release 'untracked' a simple utility that stops location storing. The app was cooked up by popular JB dev Ryan Petrich released the utility, which stops iOS from writing to the specific database that stores the location. It should not affect any other settings or features of the phone. The latest version is still brand new, and is at build 0.1.
The particular database file that 'untracked' blocks is consolidated.db, it also will clean up information that already exists in the database. More importantly, the utility requires no options for the user to worry about. It just fixes the problem.
It's description in Cydia reads:
This package installs a daemon (process that can run in the background) to clean consolidated.db file) No new icons are added to your homescreen. There are no options to configure.