Forum OpenACS Q&A: createlang step

i've got a problem on the postgres instalation.
is there any way to fix that without install postgres again?
I'm following the debian installation docs:
https://openacs.org/wiki/Installing%20OpenACS%20on%20Debian%20Linux
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debian:~# su postgres -c "/usr/lib/postgresql/bin/createlang plpgsql template1"
createlang: could not connect to database template1: could not connect to server: lÔ)@(÷%@
Is the server running locally and accepting
connections on Unix domain socket "/var/run/postgresql/.s.PGSQL.5432"?
debian:~#
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well, it's weird because i thought it was. I did the same how i'm installing no and it worked fine. Anyway i got this bug now: Unkown reason!!!!!

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debian:~# /etc/init.d/postgresql restart
Stopping PostgreSQL database server: postmasterpg_ctl: could not find /var/lib/postgres/data/postmaster.pid
Is postmaster running?
.
Starting PostgreSQL database server: postmaster^[[(FAILED)
ERROR: ERROR: PostgreSQL postmaster did not start because of an unknown reason.
PostgreSQL's init script (/etc/init.d/postgresql) attempted
to start the postmaster, however, this failed because of an unknown
reason.

This should not happen and is a serious problem. Please examine the
situation (please take a look at the log files). If you know the
reason why it failed and, then please file a bug report to Debian
(unless the reason is something obvious like a full disk).

Debian PostgreSQL
debian:~#

Do u think i better re-install it?