[otrs] The system don't get email from pop3 accounts

Hi I'm working with a new suse 10.2 installation and I'm having some problems: 1.The system don't get mail from pop3 accounts. Although I check the address and there are right ( Use PostMasterPOP3.pl) it don't work. When I checked in this moment read the accounts and load the DB. I thing maybe some problem with cron ?? 2.-Problem with privileges acces to queue's I assign to move and create privileges only form some users in a group and assign this group to the queue. When I connect with the user I cant move to the queue o create tickets ?? Somebody would help me ?? Thanks Antonio