setAutoCommit(false)

Hi,

I'm a developer on a JDO implementation and we support PostgreSQL as a
database. When obtaining a connection for the DB we do a
setAutoCommit(false). Nothing controversial there. I've used PostgreSQL
7.3.* with no problems and also 7.4.1-2 with no problems. I do however
have
a user saying that he is using latest PostgreSQL (postgresql 7.4.2 with
pg74.213.jdbc3 is what he told me) and our call to setAutoCommit(false)
apparently returns

java.sql.SQLException: ERROR: SET AUTOCOMMIT TO OFF is no longer
supported

at org.postgresql.core.QueryExecutor.execute(QueryExecutor.java:131)
at
org.postgresql.jdbc1.AbstractJdbc1Connection.ExecSQL(AbstractJdbc1Connection.java:482)
at
org.postgresql.jdbc1.AbstractJdbc1Connection.ExecSQL(AbstractJdbc1Connection.java:461)
at
org.postgresql.jdbc1.AbstractJdbc1Connection.setAutoCommit(AbstractJdbc1Connection.java:957)
at
org.jpox.store.adapter.DatabaseAdapter.getConnection(DatabaseAdapter.java:702)

Is there any good reason why he is getting this ? If so, what are
client
applications supposed to do to not have things auto-committed ?

TIA

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