>> Maybe I'm some crazy, radical DBA, but I've never had a version of
>> pgsql get EOLed out from underneath me.

Just for fun, I did a bit of digging in the release notes
http://developer.postgresql.org/pgdocs/postgres/release.html
and came up with this table about PG major releases and their
follow-on bug fix/minor releases:

Version Release date    # updates       Days till final update  Days till next 
major

6.0     1997-01-29      0               0                       130
6.1     1997-06-08      1               44                      116
6.2     1997-10-02      1               15                      150
6.3     1998-03-01      2               37                      243
6.4     1998-10-30      2               51                      222
6.5     1999-06-09      3               126                     334
7.0     2000-05-08      3               187                     340
7.1     2001-04-13      3               124                     297
7.2     2002-02-04      8               1190                    296
7.3     2002-11-27      21              1867                    355
7.4     2003-11-17      19+             ?                       429
8.0     2005-01-19      15+             ?                       293
8.1     2005-11-08      11+             ?                       392
8.2     2006-12-05      7+              ?                       426
8.3     2008-02-04      1+              ?                       ?

It's pretty clear that there was a sea-change around 7.2/7.3 ---
before that, nobody thought that PG releases were anything that
might be long-lived.  And there's nothing in this table that
suggests we've really settled on a new lifespan ... other than that
we're still putting out new majors at a constant rate, and the community
hasn't got the resources or interest to maintain an ever-increasing
number of back branches.

                        regards, tom lane

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