Unexpected end of input stream

First let me say I am sorry if this is a duplicate.  I've searched  
the archives and have found similar questions, but no answers.

I just upgraded to MySql 5 (from 4) by installing the following  
package on my machine (mac os x 10.4.7)
mysql-max-5.0.24a-osx10.4-powerpc.dmg

I am able to connect to the database using the included command line  
client, however when I try to connect
using any of the following version of the connector jar, I get an  
exception. (using ant, I have ensured that only the
connector jar I am trying to test is on the classpath).

mysql-connector-java-3.0.16-ga-bin.jar
mysql-connector-java-5.0.3-bin.jar

Has anyone figured this out?

Thanks,

Brian


PS: The Exception:

java.sql.SQLException: Communication link failure:  
java.io.IOException, underlying cause: Unexpected end of input stream

** BEGIN NESTED EXCEPTION **

java.io.IOException
MESSAGE: Unexpected end of input stream

STACKTRACE:

java.io.IOException: Unexpected end of input stream
	at com.mysql.jdbc.MysqlIO.readPacket(MysqlIO.java:1073)
	at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:619)
	at com.mysql.jdbc.Connection.createNewIO(Connection.java:1511)
	at com.mysql.jdbc.Connection.<init>(Connection.java:485)
	at com.mysql.jdbc.Driver.connect(Driver.java:341)
	at java.sql.DriverManager.getConnection(DriverManager.java:512)
	at java.sql.DriverManager.getConnection(DriverManager.java:171)
	at JDBCTest.main(JDBCTest.java:13)


** END NESTED EXCEPTION **


	at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:692)
	at com.mysql.jdbc.Connection.createNewIO(Connection.java:1511)
	at com.mysql.jdbc.Connection.<init>(Connection.java:485)
	at com.mysql.jdbc.Driver.connect(Driver.java:341)
	at java.sql.DriverManager.getConnection(DriverManager.java:512)
	at java.sql.DriverManager.getConnection(DriverManager.java:171)
	at JDBCTest.main(JDBCTest.java:13)