I have one particular folder in which I want to sort the files by modification date. So I did that, and then saved the preferences. As long as that folder is open, it holds. As soon as I close the folder and then come back to it, the preferences revert.
I've tried saving them multiple different ways. Saved as a favorite layout. Replace the folder format in any layout, etc. Just wont hold.
Now, I did the exact same thing for the same folder on my home computer, and it works just fine.