[BlueFrog]

Major blooper on STV this morning, I hear. Superman Returns is lost after half an hour (this is at about 1:15am), so they filled the time with educational shorts! At least according to a guy I know on another forum who happens to be Scottish.

You are not wrong that STV had a cockup on the morning of 1st of December.

They broadcast the film 'Man of Steel' at 12:45. About 45 minutes into the film (this would have been around 1:30am) it cut off. Unexpectedly.
It stayed blank for a couple of minutes. Then they cut to a loop of Scottish programme-filler, namely programmes such as 'Sean's Scotland' and 'Scotland Revealed Moments'.

Continuity consisted of a handful of STV Player promos and clean idents. At one point, there was two idents in one junction! Should I note that none of these programmes had a DOG.

It would stay like this from 1:30am until 3:00am. They cut away from the filler, only for the 'Volkswagen sponsors STV movies' sting to appear frozen. This remained on the screen for about 30-40 seconds until they eventually cut to the network feed (ITV1) for signed Deal or No Deal (presumably because of rights issues they weren't able to cut in earlier, ITV1 was broadcasting the first of ShopOnTV.)

18 minutes into Deal and they manage to get back on-air, creating a rather choppy cut from ITV1 to STV (DOG sported).

last-minute edit: the programmes definitely loop at some point. On my friend's recording of this I've seen the same Sean's Scotland episode on here twice.