Another real aggravation of the BT Vision system is its download speed. A 50-minute Planet Earth show in HD took a mind-numbing three hours and 20 minutes to download. And the HD version of Mamma Mia! took - drum roll, please - an incredible seven hours and 45 minutes. That's a whole hour and 45 minutes longer than the already intimidating 5-6 hour estimated download time given within the film's onscreen synopsis.
Compare this with the way the Xbox 360 downloaded the high definition Wanted in under two hours - using exactly the same BT Broadband line - and it's clear that something isn't quite working as it should within either the V-box or the BT Vision servers.Obviously the snail-like download speeds make any sort of instant gratification with downloadable movies completely impossible with BT Vision - especially as, unlike the Xbox 360, the V-Box doesn't let you start watching downloaded films before the download has completely finished.