I'm on 6th handset. All of the other ones had flicker, i think most of the ones in the UK have flicker problems because 2 is a coincidence 6 is a statistic! I hope this one does not flicker as well, probably will though.
And I also think that people are confusing the flicker problem for the graphic glitch, the flicker problem happens on grey back grounds, the glitch problem is defiantly a software bug. But who knows even the flicker problem might be a software bug.
I am convinced that this is caused by heat though. Wack your phone in the freezer for 30 seconds and watch the flicker go away.
Sent from my HTC One X using XDA