I get this on most occasions when clearing the auto.log only. I recall I may have posted about this before, I think as a question in whether there is a diagnostic to restart the auto process without a reboot.
On this latest occasion I know that it was working its way through a list of files to shrink, and also recording when I cleared the log. Not sure if either of these is significant.
Yes, I can see that when it runs. I tried increasing the logging level, just to make sure that it wasn't a case of the process having nothing to do, but the remained at zero bytes. Thinking about it, what I saw was the absence of a log, not necessarily the auto process stopping. I have no way of knowing.
If the log could be viewed with the latest events at the top, it wouldn't need clearing so often, but If it could also be managed by webif to just retain the last (say) 7 days, that would be brilliant.