Thankyou so much!
I just had my machine replaced have been working on email footers and tweaking the fonts between 10 and 10.5pt type (minute fine tuning) to see which best worked on web and screen view at 100%, my computer died and got replaced by a retina and then all hell breaks loose with this size thing. Talk about stressful.
Noel has no idea about the importance of viewing like for like what you clients see....deisgn is after all visual communication. Also the retina screen is great, we see the image at 100% size in mail application and then next door in photoshop on the same screen at a smaller size. Its so frustrating.
Ill try out your fix...sorry that other photoshop users can be such high and mighty jerks FFS!