Error install postgresql-9.1

[Fernando ff77 <ff@bglug.it>]

hello,

i update my server from sarge to wheezy (stable). (dist-upgrade)

All package is ok... thanks aptitude !!!

The problem is postgresql-9.1, during the installation i read this error...

Configurazione di postgresql-9.1 (9.1.9-1)...

[....] Starting PostgreSQL 9.1 database server: main[....] Use of uninitialized value $logsize in numeric gt (>) at /usr/bin/pg_ctlcluster line 215. Use of uninitialized value $logsize in numeric gt (>) at /usr/bin/pg_ctlcluster line 215. Use of uninitialized value $logsize in numeric gt (>) at /usr/bin/pg_ctlcluster line 215. Use of uninitialized value $logsize in numeric gt (>) at...

................

invoke-rc.d: initscript postgresql, action "start" failed.

dpkg: errore nell'elaborare postgresql-9.1 (--configure):

 il sottoprocesso installato script di post-installation ha restituito lo stato di errore 1

Si sono verificati degli errori nell'elaborazione:

 postgresql-9.1

I searched on Google but have not found a solution.

HELP ME ! 

ps: Today is Friday 17 !!! ARGHHH.

Thanks.

FerX