I had this running (except with netatalk 2.2.x I don't think all that "unsupported" prefs setting and xml hacking was necessary), anyway after a month or so Mac

I had this running (except with netatalk 2.2.x I don't think all that "unsupported" prefs setting and xml hacking was necessary), anyway after a month or so Mac OS started complaining that the backup couldn't be "verified" or somesuch, and then proceeded to re-do the whole backup. As this started happening every couple of days I gave up and switched to running rdiff-backup manually across ssh instead. Makes browsing the backup repository much easier too, especially if I only need something from the last run.