JDBC- SQLException results returned?

i am seeing postgre 6.4 return the following error message when performing
a JDBC update with executeUpdate().  any ideas what it means?

ava.sql.SQLException: results returned
        at java.lang.Throwable.<init>(Compiled Code)
        at java.lang.Exception.<init>(Compiled Code)
        at java.sql.SQLException.<init>(Compiled Code)
        at postgresql.Statement.executeUpdate(Compiled Code)
        at postgresql.PreparedStatement.executeUpdate(Compiled Code)
        at InsertError.record(Compiled Code)
        at InsertError.record(Compiled Code)
        at wbCheckUrl$CheckThread.run(Compiled Code)
java.lang.ArrayIndexOutOfBoundsException: 8
        at wbCheckUrl.checkUrl(Compiled Code)
        at wbCheckUrl$CheckThread.run(Compiled Code)
<six more of the above error>