Getting started with Joomla

I am trying to get started with Joomla. So far I have had quite a bit of issues with Joomla and Postgresql. Maybe I am stubborn for wanting to use Postgresql and not MySQL but I prefer to keep as much as possible in Postgresql. The primary problem seems to be with the insert statements Joomla uses on tables that have sequences attached. Upon initialization Joomla inserts with specific IDs in the sequence fields but does does not update the sequence. This results in the next insert trying to insert with an already used ID as Postgresql used the nextval from the sequences.