I have my preferences set to auto match, auto fine tune and preset to 1/2 noise. When I filter the first image file in CS3, NI correctly does what it should. On subsequent files, the profile says "recent" and the noise levels shown are all zero. If I then manually tell NI to do the best match, it does the match correctly and remembers the 1/2 noise preset. I never had this problem before - don't know if it's 5.8 or moving to Vista from XP.
I've noticed this on files from 2 different camera models with different profiles, where the images being processed in a session were all from the same camera at the same (or different) ISO settings.
5.8 Pro Plus doesn't always do the profile matching
No problem with stand alone
I'm not seeing this problem with the stand alone version of 5.8, which I don't normally use. It seems to be in the Photoshop plug-in.