I keep receiving this error whenver I run a servlet that tries to access the Postgres DB: org.postgresql.util.PSQLException: Something unusual has occured to cause the driver to fail. Please report this exception. I've run this servlet before when I had everything setup on my Windows box and it was all fine. Now I'm trying to get it work on my ubuntu box. Has anyone have this problem before? Maybe I don't have the JDBC driver setup correctly?