[Pki-users] PKI doesn't work when i reboot the computer

Hi all, I have mounted the Fedora PKI and all modules are installed correctly but as soon restart the machine no longer works at all. When i start the pki-ca and try to access to agent services, it asks me for authentication, then i enter the password correctly and it showed me the options of the pki-ca but in the middle it say "Invalid credentials". The same problem occurs in the other modules when i try to access. Anyone else have had the same ploblem??? The PKI is mounted in Fedora 8 and i had the problem in the configuration of the pki-ra of the packet nss-tools but this is already solved. Thanks, Nacho.