On Tue, 01 Mar 2005 20:23:28 +0000, Paul Howarth <paul@xxxxxxxxxxxx> wrote: > This is because the tool handling the threading is using the References: > headers in the email to do it, rather than the naive Subject:-based > method used by the MARC-archives. > That's probably what gmail is basing theirs on as well. Looking at this thread and then the "changed" one... shows up as two different threads in gmail.