Same here. Was it the software upgrade on 27th? Spent ages on the phone asked me to reboot all which I had already done 2 times. Then escalated to level 2 promised phone back with 48 hours. Mmmmmm
Have you tried removing power from the box for a few minutes as opposed to resetting/restarting. Just a thought as I had to do that with one of my G4 boxes as no internet channels or Netflix didn't work.
I had an IPC6023 following the update on the 27th on both my boxes. I found that the way to get around this was to go into BTPlayer and then back out again. The action of doing this appears to validate the IP channels and then all is well.
Hope this helps.