Sugar 4.5.0.h scheduler download trouble

[maxpaz]

On Ubuntu server LTS ,Apache/2.0.55 (Ubuntu) PHP/5.1.2
with mbstring
Multibyte Support enabled
Multibyte string engine libmbfl
Multibyte (japanese) regex support enabled
Multibyte regex (oniguruma) version 3.7.1

the scheduler run fine, but do not download in automatic the group mail messages.

In sugarcrm.log I receive lot of :Fri Dec 22 22:27:16 2006,221 [7678] FATAL SugarCRM - SCHEDULERS: could not get an IMAP connection resource for ID [ 25e2fbe5-4a5e-b7f8-2787-458bd506ccfe ]. Skipping mailbox [ personal.casella ].


But getting the mail manually is working fine, infact if I Press Check Mail (in the group inbox) the message/messages is/are correctly downloaded from my POP3 server. And the scheduler interface tell me that every job is completed with the correct date and time.

I attach my crontab scheduler :

* * * * * cd /var/www/jet; php -f cron.php > /dev/null 2>&1

And I use in the Email Handling Options a dedicated group user: the name is casella
The sugar settings is in ISO-8859-15(latin 9) because I send and receive email in italian language.

With the previous Sugar versions the dowload was completely automatic !!

Missing something important ???

Thanks for your help

Max