Excerpts from Tom Lane's message of lun ago 16 11:18:32 -0400 2010:

> We could perhaps address that risk another way: after having written
> postmaster.pid, try to read it back to verify that it contains what we
> wrote, and abort if not.  Then, if we can't read it during startup,
> it's okay to assume there is no conflicting postmaster.

Makes sense.

BTW some past evidence:
http://archives.postgresql.org/message-id/[email protected]

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Álvaro Herrera <[email protected]>
The PostgreSQL Company - Command Prompt, Inc.
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