Load Monitor gives the system load, not the CPU load. It tries to mimic the behaviour of the well-known "xload" availble with a X11 server. By default, the load values for the last 5, 30 and 60 seconds are displayed, drawn and updated every second. The delay between two updates can be adjusted.
What's new in Load Monitor
Version 0.93 adds the following:
The background of the icon is now transparent, new menu to send a mail or to visit the Web page, improved localization