timestamp skew during 7.4 -> 8.2 upgrade

[Louis-David Mitterrand <vindex+lists-pgsql-general@xxxxxxxxxxx>]

Hi,

After our 7.4 to 8.2 upgrade using debian tools, we realized that some 
of our timestamps with tz had shifted:

For example '2007-04-01 00:00:00+02' became '2007-03-31 23:00:00+01' 
which is on a different month. Some of our applications were severely 
disturbed by that.

Has anyone noticed that? Is there a way that would could have avoided 
it?

Thanks,

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