I have two .png images, which originated as screen captures, attached to a page. When I edit the page and insert those images, they look fine. When I Update the page, the images are distorted - still the right shape and size, but badly blurred, as though the source pixels were not properly mapped into the screen pixels. When I right-click on a blurred image and view it, the image looks fine.
Other screen-capture .png images work perfectly.
