On Sun, 14 Mar 2010 22:59:28 -0700 (PDT), Ben Gamari <bgamari.foss@gmail.com> wrote: > Notmuch is using xapian 1.08-1.99karmic from the Xapian backports PPA, which > I believe includes the recent database update optimizations. As far as I know, it doesn't. 1.0.18 is the stable version in which it was fixed. http://trac.xapian.org/wiki/ReleaseOverview/1.0.18 hdp.