java.sql.SQLException: results returned

JDBC-ers,

I get the following error (see below) when I attempt to insert a row into
one of our tables.  I'm using postgres 6.4 with java/jdbc 1.2.1.

Any ideas on what it means? I can't seem to find documentation
on this particular exception anywhere?

Also, I have tried upgrading to 7.1, but I'm having problems with
system settings SEMMNI and SEMMNS as stated in postmaster.out.
I posted a message to pgsql-admin with the problem info if anyone
has any ideas.

Thanks,

Eric

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INSERT INTO bad_urls(ID,DATA,ATTEMPTS,REASON) VALUES (3376,'
http://www.oit.itd.umich.edu/projects/adw2k/chordata/aves.html
',0,'Unknown Host')

java.sql.SQLException: results returned
   at java.lang.Throwable.fillInStackTrace(Native Method)
   at java.lang.Throwable.fillInStackTrace(Compiled Code)
   at java.lang.Throwable.<init>(Compiled Code)
   at java.lang.Exception.<init>(Compiled Code)
   at java.sql.SQLException.<init>(SQLException.java:82)
   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)