Batch update issue

Hi,
my first question is, is pg74jdbc3.2.jar the latest driver for 
postgresql? If so, does it support batch updates? I ask this because I 
am using Hibernate, or trying to should I say!, to do EJB stuff to 
postgresql and when I try to commit() data to a postgresql table i get 
the following error:

'Could not execute JDBC batch update'


Uzo