Postgres 6.4 load problem

Hi,
I'm having a problem moving a database from 6.3.2 to 6.4

Hardware: Alpha
OS: Digital Unix 4.0d

Dump command: pg_dumpall -z >db.out
Load command: psql -e template1 <db.out

I'm using the "pg_dumpall" command from 6.4 as suggested
by the INSTALL file.

Both the dump and load commands are done by the "postgres"
account.

When I try to load the database, I eventually get the following
message (many times) while a COPY command is being executed:
query buffer max length of 20000 exceeded
query line ignored

I removed 6.4, reinstalled 6.3.2, and was able to do the load with
no problem.

Is this a bug or did I miss something?

Thanks,
Robert Adam, II