Now here's a weird one that I have spotted but only in severe pixel peep mode. I have a shot of a stone and brick barn with 3 sliding doors. The doors have that sort of frosted glass that you get in bathroom windows.
Both LR and Silkypix fail to render this properly - the circles in the pattern of the glass aren't really circles! Doesn't look right at all.
JPEG is the best. RPP renders the pattern similar to the JPEG but suffers from colour artifacts.
Weird. I could try to post some crops but you'd only really know zooming in 2:1 or more.
How do I go about sending a sample file to Adobe?