Thank you for your patience. I can totally understand the frustration of your Netbox PVR freezing every 5-10 minutes for a few seconds. Is this something that happens on all channels? I'm concern with the fact there are noises coming from the box when this happens. This would indicate an issue with the internal hard drive, if the box is a rental I would recommend you take it to your nearest Rogers store location to have them exchange it for you. If the box is owned you could maybe try a factory reset before referring to warranty or repair.
* Keep in mind all recordings will no longer be available after any exchanges or factory reset of the Netbox PVR 22