Update: Since i got the stb up and running as at about 7:15am this morning, it has frozen again sometime between then and now (1:45pm) so it's only staying up hours after crashing. Have just pulled the box out of the entertainment unit again, and while it was powered on, the fan was still running, and the box was hot (but no hotter than my foxtel unit which sits right next to it). Since unplugging it, i've gone to plug it back in, and now once again it will not power on at all