[Dovecot] quota plugin

[lenny at edpausa.com]

I keep getting this when enabling quota plugin for pop/imap

dovecot: [ID 684838 mail.error] child 22990 (imap) killed with signal 10


protocol imap {
  mail_plugins = quota imap_quota
}
protocol pop3 {
  mail_plugins = quota
}

quota = dirsize:storage=1024000


the user has only 40+mb in the home dir and the quota plugin properly shows
4% usage. However, messages can not be deleted or moved.