Problem widht JDBC Driver

Hello to all,
I'm writing because i have noticed a problem with the JDBC driver:
JDBC specification say that "ResultSet.absolute( 1 )" is equivalent to
"ResultSet.first()". With the postgresql jdbc driver this is not true.
I suppose that this problem happens because theVector implementation of
ResultSet.

There is someone that has investigated this problem and can help me ?

Thanks to all.
Max