As a web designer I hate one particular thing about Photoshop:
Is it possible to force PS CS6 to turn decimal pixels EVERYWHERE off?
I’ve been lurking around GD for a while now and nothing seems to work, as I don’t even see Pixel Preview option anywhere. Also Edit\Preferences\Guides, Grids & Slices and setting Guideline every 1px doesn’t help either.
What am I missing?
Yes, at least when it comes to dragging out ruler guides, like you appear to be doing.
When dragging a ruler onto the canvas, hold the shift key and your guide will be constrained to the ‘ticks’ on the ruler.
So when viewing at 100%, as you drag, your guide will snap to every 10 pixel increment. You can snap to every single pixel by zooming in to 1200%, and then dragging with shift.
So holding shift means you cannot place a guide between pixels, effectively “turning off decimal pixels”.