Problem inserting more than 80 registers!?

My first post!
Hello to all.

I'm using Postgres 7.4.2. I compiled it without changing any server
parameter.
I'm trying to do a bulk of 90 inserts in one table, commiting at the end.
My problem is that the 90 inserts are processed on the client (Hibernate),
but in my table I only have 80! It never inserts more than 80 registers.

I don't know if I have to tweak any server parameter to do bulk inserts. I
thought it had to do with WAL, but I've already increased the "wal_buffers"
parameter and still no success.

I really need help. Can't figure out the problem.

Thanks in advance.
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