Steps to reproduce: 1. Just place the CPU Usage System Monitor widget in your panel. 2. Configure it as pie chart Results: 1. It doesn't show the blue percentage anymore (I can remember it was blue someday) 2. After a few minutes (or hours? or maybe after resume from sleep? I am not sure yet) it just doesn't update anymore. It does not even show a percentage text label in the middle. Thanks for investigating that issue(s) :)