It broke by itself in front of your eyes? You know no one is going to believe that. I say BS.
Check out other photos - if only my photoshop skills were that good
Maybe my wording wasn't the best... what I mean is that when I place it on the surface, something to do with the contact (and it wasn't a drop, I repeat) caused it to start cracking from one point and the crack spread across the whole piece of glass, but that took some time, like a second or two... so when I picked it up to look, I could literally see it happen and hear it too.
I reckon the glass must be under some tension by the outer case and possibly the temperature change of it going from my warm hand to the cold surface cause the case to contract and put the glass under too much pressure causing this type of "slow" crack. I'm not a physicist... but that's my guess.
This is one of the first phones of the new batch here in the UK - maybe it's a one off (and I really hope so as there will be a lot of unhappy people otherwise)