The tool looks great, shows alot of information in one place, and conveniently is accessible through Dashboard; but it has one major bug - and that is starting a lsof process up which takes up 90% of my CPU on a Macbook Pro C2D. This process is used to determine the status of your system; but it should be opened and closed almost immediately.

Even if you close and reopen the widget, the 1st process is orphaned, and a 2nd lsof process is created, so you then have 2 processes taking up all your cpu resource. Major bug, and until it's fixed, this tool should not be used.