could not [extend relation|write block N of temporary file|write to hash-join temporary file]

Hi everyone,
I use PostgreSQL 8.1.9 and Debian 4.0 "etch" Linux kernel 2.6.18
(debian precompiled).

I install my db and insert one test database without problems.
I create schema of this db as sql script. Sql script is a list about
create relation table test_table.TEMP__N and set relation and drop
relation table where N about from 0 to 300.

When I insert sql script with shell command:
psql -d test < script.sql > script.log 2> script.err
in file error I see 3 error sort:
ERROR: could not extend relation 1663/63659/85595: No space left on device
ERROR: could not write block 21 of temporary file: No space left on device
ERROR: could not write to hash-join temporary file: No space left on device

I test all in two server machines:
1) AMD Opteron(tm) Processor 244, 1790.535MHz, 1024MB
2) AMD Opteron(tm) Bi Processor 244, 1804.153MHz, 8192MB

First errors begining when sql script inserts:
1) relation about TEMP__100
2) relation about TEMP__227

In any case there is space in device after sql script:
1)
Filesystem Dim Used Free Used Mount
/dev/md0 953M 254M 699M 27% /
tmpfs 503M 0 503M 0% /lib/init/rw
udev 10M 88K 10M 1% /dev
/dev/md1 5,6G 2,4G 3,2G 43% /var
/dev/md2 5,6G 3,5G 2,2G 62% /usr
/dev/md3 953M 340K 952M 1% /tmp
2)
Filesystem Dim Used Free Used Mount
/dev/md0 953M 217M 737M 23% /
tmpfs 3,9G 0 3,9G 0% /lib/init/rw
udev 10M 88K 10M 1% /dev
/dev/md4 133G 67G 66G 51% /era
/dev/md3 953M 384K 952M 1% /tmp
/dev/md2 5,6G 3,0G 2,7G 54% /usr
/dev/md1 5,6G 915M 4,7G 17% /var

Can someone help me?
Thanks very much for the help in advance.

Alessandra Bilardi
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
CRIBI, University of Padova, Italy | http://www.linkedin.com/in/bilardi
Via Ugo Bassi, 58/B - 35121 Padova | http://www.alessandrabilardi.com/
Tel 0498276165 -- Fax 0498276159 | bilardi@cribi.unipd.it
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=