Importing data from 7.2.2 into 7.3b1 !?

Hi,

Sorry to insist, may be my previus subject was miss understood ...
refering to this message :
http://archives.postgresql.org/pgsql-hackers/2002-09/msg00461.php

But I can't import my data from 7.2.2 into 7.3b1 ...
1- Many errors during importation of the data
2- Seems to use all the memory (and swap) during the import of the data made 
with a classical pg_dumpall from the 7.2.2 to the 7.3b1 ... 

I'm used to make the same import on the same computer from the same data 
from 7.2.2 (other server) to 7.2.2 (this computer)... so the 7.3b1 use more 
memory and seems to not understand the pg_dumpall data of the 7.3b1 ?

Any idea ?

I'm the only one with this kind of trouble ?
The beta page tell us to make dump/initdb/reload ... it's what I've done but 
without any result ;)

Regards,
-- 
Hervé