It won't be anything to do with Virgin but instead it'll be a software problem. It would happen often on my old sony bluray player when the BBC updated their software and either accidently went incompatible with the sony and it would take a few days/week to be corrected by the BBC or a new sony firmware.
Eventually the Sony was taken off the compatible list and now doesn't work at all on iplayer but it was older than your panasonic TV
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Although a Daily Fail report here's an article you should read
http://www.dailymail.co.uk/sciencete...years-old.html
It's one of the reasons as to why I went from using apps on a smart TV/player to running Kodi on a raspberry Pi