Another consideration RE the UPS - could simply need a new battery - we've found you generally get about 2 years of reliable use and then the battery should be replaced. The difficulty involved depends on the UPS, but most are quite easy. In fact, many of the good ones are designed to allow you to change the battery without even shutting down first - check the manual for your unit on this though 'cos not all are. If in doubt, shutdown.

If the monitor is a CRT then having it in the UPS is not a great idea, not a deal breaker but not good either. An LCD would be fine. Also, if you have a laser printer in the UPS then you should move it - they draw far too much current.

Matt's comment about the power board are also apropos - dunno 'bout a "Furman" one (haven't heard of 'em here in Oz) but UPS's should always be plugged straight into the mains.

--=-- My credo: If it's worth doing, it's worth overdoing - just ask my missus, she'll tell ya laugh --=--
You're only paranoid if you're wrong!