File health check reports all ok.
The tasks all look like they're due to run in the next 24 hours at staggered times. They're still not updating though. I have a buynch of server error logs but they seem to be unrelated, (mostly timeouts and unconnectable to gravatar or recaptcha, timeouts etc)
Each one I run manually says it was successful, but my post counts on the front page are definitely still incorrect and haven't changed for a long time.