now() and date_trunc() apparently corrupting data

This is with -configure -enable-integer-datetime in 7.3.2, i386 Linux
platform.  Is anyone else seeing this?  If so, does it happen without
--enable-integer-datetime?

        junk=# \d mt
                    Table "public.mt"
         Column |        Type         | Modifiers
        --------+---------------------+-----------
         v      | time with time zone |

        junk=# delete from mt;
        DELETE 4
        junk=# insert into mt values ('06:25');
        INSERT 12554249 1
        junk=# select * from mt;
              v
        -------------
         06:25:00+00
        (1 row)

        junk=# select * from mt where v < now();
              v
        -------------
         00:00:00+00              <-- data has been changed...
        (1 row)

        junk=# select * from mt;
              v
        -------------
         00:00:00+00              <-- ...permanently, it seems.
        (1 row)

The same seems to happen with date_trunc()

--
Oliver Elphick                                Oliver.Elphick@lfix.co.uk
Isle of Wight, UK                             http://www.lfix.co.uk/oliver
GPG: 1024D/3E1D0C1C: CA12 09E0 E8D5 8870 5839  932A 614D 4C34 3E1D 0C1C
                 ========================================
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      Thee, majestic in holiness, awesome in praises,
      working wonders?"
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