Had a recent leg take 5 days to finally post with a status N indicating it was not eligible for accrual.

Of course it was eligible- complete w Delta codeshare flight number and booked on 006 stock.

Called Diamond line who checked w the sky miles team who said there was a glitch a couple of days ago that resulted in many legs not posting correctly. It is eligible but now they need to resubmit the entire itinerary and supposedly all will be fixed in 24 hrs.

Pays to watch your skymiles.

Edited to add:
It is now entirely fixed. Had to logout and log back in to see the totals update however. That was fast.