The simplecoin cronjob that runs once a minute stopped running last night.  (~8 hrs ago)  Naturally, it has to break while I'm sleeping.

The way it works, it takes out a lock, then only unlocks when it finishes.  So something happened that it didn't finish and release the lock.  From there on out, no more can run until I clear the lock manually.  I've looked at the logs and see no reason that it should have failed.  There's no db errors or script errors or anything.  On a hunch I've added a set_time_limit(0); call at the top.  I really hate it when things break with no idea why.  

You can see on the blocks and payouts though that when I released the lock it caught up with the solved blocks and payouts.

Cheers.