Any form of on demand service looses connection constantly. This is a recurring problem. I have spoken to Virgin about it before who ran a few tests but it seems to be getting worse if anything. Says a Ethernet cable is unplugged but then reconnects later - only to keep disconnecting.
Are you using a V6 or a TiVo? If you're not sure, check here
If it's a TiVo, you can quickly visually check the "heartbeat" light on the front-left of the box (second green from the left, next to a heart symbol) which should be solidly on. If it's flashing, then the modem is dropping the connection. That would be a service fault which you need to report to Virgin. The only two sensible outcomes from that faults call would be an engineer visit or replacement box, anything else is just kicking the fault down the road.
If you have a V6, it relies on a connection to your homehub for onward internet connection. So how is it connected - Ethernet or WiFi?
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