getTablePrivillages giving wrong privillages

Hi,

 I created a table PRIV_TEST with two columns and granted "SELECT" and "UPDATE" privillages to a user DEBUG. but when i call :

ResultSet ts = dbmd.getTablePrivileges("pg_catalog","public","PRIV_TEST");

 

Many rows are returned including the two privillages i granted, plust some indicating PRIVILLAGE=UNKNOWN

 

Is this a bug in the JDBC driver or i am missing something??

 

Thanks,

Altaf Malik