Error - Antivirus scanner definition file update failed

Hello,

I would like to know if anyone has a solution for a certain problem with ReadyNAS device - the device reports the following error: Antivirus scanner definition file update failed due to download failure. Check your Internet connection.

I saw over that community forms that some other people are reporting same problem with diferent devices. I saw also that some of you recommend updating the device throuigh SSH connection. I am attaching a file, as you can see I rebooted the NAS and it managed to update but it's failing again after that. The problem is not exactly with the manual updates, but mostly that I prefer the device to automatically update the definitions and to no generate errors and reports to our support team. Is there any permanent fix for that problem?

Regards,

SVetoslav