I've used Powerchute for over a year now. The only "problem" I have with it is the setup/adjustment window the program is supposed to put on your system (at least on my winXP home before and now pro) doesan't take. Immediately after installation, the APC screen is available when you right click on the task bar parachute. And you can set all your preferences and view status etc. But once you (I) reboot or shut the machine down, when it comes on again the APC page is gone and the default winXP power page is there. The system works so I gave up on trying to solve that issue. APC support couldn't help me. We tried a number of things but the APC page was always superseded by the winXP page.