restoreing dumps fail

I'm trying to upgrade from 7.1.3 to 7.2.1 and after makeing a dump, installing
the new version (7.2.1) making the initdb as postgres, when I try to dump all
the data back to the database, and after some dump the backend dies:

NOTICE:  Message from PostgreSQL backend:
        The Postmaster has informed me that some other backend
        died abnormally and possibly corrupted shared memory.
        I have rolled back the current transaction and am
        going to terminate your database system connection and exit.
        Please reconnect to the database system and repeat your query.
server closed the connection unexpectedly
        This probably means the server terminated abnormally
        before or while processing the request.
connection to server was lost

What's wrong? I can't finish the upgrade if I can't get my data back!

Any help will be apretiated.

--
Porqué usar una base de datos relacional cualquiera,
si podés usar PostgreSQL?
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Martín Marqués                  |        mmarques@unl.edu.ar
Programador, Administrador, DBA |       Centro de Telematica
                       Universidad Nacional
                            del Litoral
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