Hi all, I bought an APC UPS about a month back. It took me sometime to understand how it works and since now I know a bit I decided to share the same . Have a look at http://flossexperiences.wordpress.com/2008/10/26/configuring-apcupsd/ if you are thinking of having or buying a UPS.
I'm not associated with APC in any way other than just being a customer .