The small icon version that displays for a general folder, the one what is created if you make a new folder, is different then the one that is displayed for the large icons. I'm guessing that it uses the small icon for the list and detail folder display modes.
This is mainly concerning me as it just occurred randomly over the last day or two and I'd like to get it to go back to normal.
Also all other folder icon types are fine even in the small view