I have finally fixed the problem with Daylight Saving Time and recurring events in PostgreSQL.
I missed one of the places where it does interval math including the timezones, which will add or subject and hour if the interval includes DST changes.
Its on CVS HEAD.
The upgrade is here
http://cvs.openacs.org/cvs/openacs-4/packages/acs-events/sql/postgresql/upgrade/upgrade-0.6d2-0.6d3.sql?rev=1.1&view=markup
It'll work on any 5.3 install. If you have an older install make sure all the upgrades from
http://cvs.openacs.org/cvs/openacs-4/packages/acs-events/sql/postgresql/upgrade/upgrade-0.6d1-0.6d2.sql?rev=1.1.2.3&view=markup
are also run, and be sure to run them in the correct order since the 0.6d1-0.6d2 upgrade includes the older version of insert_instances that is replaced in 0.6d2-0.6d3.
