Firebird Upgrade

Work is being carried out on Version 5 of Firebird but I did not switch to Version 4 because I find their aproach to adding timezone information is simply wrong! Am going to have to live with it, but all of the STORED timestamps are UTC. I store offsets various ways, such as providing the user with times based on their local timezone or a target timzone. Everything is normalized to UTC so that every event is accuratly recorded.