I wasn't sure at first whether to post this in Support & Help or Uncategorized, but went with Uncategorized because it isn't actually about any problem. So:
In the System Monitor panel applet, what do the sections for load and hard drive indicate? "Load" probably isn't CPU load or memory load, because each of these has its own section. And "hard drive" doesn't appear to be which share of the hard drive is full or something like that.
Thank you in advance!