A recent issue I've been having with my lumia 900 is the screen ghosting seen above, which interestingly only appears when trying to compose an email. Rather than normal screen ghosting (residual images left on the screen between transitions) it appears to be a sort of misplaced keyboard with a lighter opacity, seeing how the ghosted buttons react to touches on the actual active keyboard.The issue isn't a major one seeing how it's a random occurrence that resolves itself automatically, still it would be interesting to know if this is an isolated incident or if others have faced this issue as well.