I am not having a lot of luck with uninteruptable power supplies lately. With the power outage last month, I found how short they lasted. Now, the one that I had powering my router and cable modem started to power click on and off with no browning out or any other strange power condition. I figure that can't be good, so I yanked it out and put the stuff on a power strip. Sigh.
I know I get what I pay for, so maybe I just need to spend a little more on the next one.