strange problem

Hi

I have a single PostGIS table in PostgreSQL

This table has like 500000 records

I use the JDBC driver to only send a quick query without browsing resultset and it take forever. For example:

Statement stmt = connection.createStatement();

ResultSet rs =stmt.executeQuery("select street from \"QCs_polyline\"");

stmt.close();

This takes 19 sec. Does I am missing something like a configuration on the driver? So far I was just testing PostGIS/PostgreSQL with tiny tables.