LOCK TABLE oddness in PLpgSQL function called via JDBC

Almost forgot the very important info:

PostgreSQL: 7.1.3
JDBC: 7.0-1.2
JDK: 1.3.0_02
Client Platform: Win2k 5.00.2195 sp2
Server Platform: RedHat 7.1

I hadn't realized I was using an old JAR. I've just grabbed the stable
7.1-1.2 and will try again.

Peace,
Dave