It looks like we currently have 4400+ late answers awaiting review:
Obviously that's not possible, so what's up with that review queue?
Looks like a server-side issue, however using Google Chrome 45.0.2454.93.
I would like to raise the bar for late answers to enter the Late Answers Review Queue to 50 rep, which is the threshold after which users gain the ability to comment. Here are some answers that were posted by users with between 10 to 50 rep (yes, there's a little selection bias to be sure. I suspect most/all of these will be 10k links only by the time you're reading this. Note, all of these are from the last 5 hours.
Raising the bar to 100 would require changing two variables at once. Since that would make it harder to evaluate each individual change, I'd like to try raising the reputation for getting enqueued to the Late Answer reviews to 50 and reconsider upping it to 100 at some point in the future.
That seems to be it.
It's definitely a bug, though. From a comment:
Just to note, the answers should not be older than a month and the current spike should be temporary. – Jon Ericson♦
@muru: I'm sorry about that. Thank goodness I didn't raise the limit to 100. As a reminder, it's easier to clear a task from this queue than many others. A single review dequeues. – Jon Ericson♦
@Sven: Reverting won't help, I'm afraid. The damage has been done. I have gone over to pitch in on Server Fault as an act of penitence. – Jon Ericson♦