Body Glove Cover - Possible Root Cause
I was reading the posts relating to the screen shot issue on the HTC Sensation which I also have seemed to developed the same problem now for at least a month now, and I have figured out that the moment I take the phone out of my BODY GLOVE Cover and try to re-create the error (screen shot) when pressing the home button, the problem does not re-occur again.
Which means that the cover might be applying just enough pressure on the power button which in turn causes the screen shot issue to occur, I think the cover problem might also be causing my phone to switch itself back on when I switch it off (i.e.) the screen into locked state and off, then the phone instantly comes on again but in a locked state. So, to conclude I think the my cover is actually causing the both problems.