Responding to your request here.





I can't say it's a problem I've noticed personally, though now you've made me look it does seem that the large thumbnail is slightly fuzzier than the same image in the artwork panel. I have the artwork panel as small as it goes (small screen) and it is still slightly larger than the image in the browser so that might be all there is to it.





Here's an example from my screen.









Perhaps iTunes is storing a thumbnail at say "medium" size which it then blows up to create the large image. Are you seeing a similar effect or is your "fuzzy" art much fuzzier? A screenshot would be helpful.





tt2