Had new 360 box fitted last week, it will randomly swtch off for a second or 2, both sound and picture. Have checked all the wires and rebooted the box a nunber of times but to no avail. How I wish I'd just kept the V6 box!!! Ringing Virgin doesnt help, just get automated viice that runs a test, says it will send a signal and reboot all our kit, but that never seems to happen. Anyone else having these issues?