Unfortunately it looks like the 1:1000 sampling since last Friday was too extreme and is destructive of information, even for the actions that were the most numerous. We knew that such a high sampling factor was going to destroy information for small wikis or metrics with low figures, but even the huge metrics in the millions have become unreliable. I'm saying that because multiplying even the largest figures by 1000 still doesn't give an estimate close to what it was before the change. Which means that the actions graph probably won't be fixable for the period since last Friday until my fixes make it through. Even compensating for the sampling (by multiplying the figures by 1000), the line would jump up and down every day for each metric.