Is this PSU dying -0.98v on the -5v Voltage Value

Hey would like some feedback on the missus's PC. It has been behaving badly of late always coming up with the "You have logged in after a fatal error.......' do you want to boot in Safe Mode etc etc. I checked her temps one day and noticed it at 60C with no load (it's a Prescott!) so knew I had to do the spring cleaning. After cleaning and refreshing TIM I booted and got about 50C (nice for this PC) and noted in EVEREST the very low -5v Voltage Value. Is that an indication of failure? Loaded it up a bit doing all the spyware housekeeping and it got down to -0.98v!

 

The only -V output in a modern psu is -12V. I wouldn't worry about it. On top of that, all other voltages are under the acceptable 5% fluctuations.