I asked about this once when I noted the collection log showed no contact activity on a late loan. Here is an excerpt of the reply I received from LC:
"Generally, when a loan is delinquent and the collection log on a loan performance page does not have any updates, it is due to unconfirmed information that we have received pertaining to a borrower's account. For example, if a borrower tells us that they have filed for bankruptcy, we do not update the loan performance page to show that information until we have confirmed the bankruptcy. Additionally, we are unable to contact the borrower once they mention bankruptcy to us.
Similarly, if a borrower begins working with a debt management company or is going through a debt settlement, we are unable to update the loan performance page until we have received confirmation and we are unable to reach out until the debt management company permits.
Another example for when a loan performance page is not updated is when we hear news that a borrower has passed away. We cannot update the collection log until we have received confirmation."
For the loan I was inquiring about, all of a sudden it was paid off when it was pretty late-- great news! As a side note, I also have another loan where there was a note in the log that the borrower had passed away. Hope that helps.