I finally got the hi temp situation sorted, I hope. It was being caused by WD having been installed incorrectly, suspected, and I installed it. Anyway I could not find a way to uninstall it and it kept running in the background causing my comp to run extremely hot. I tried many different things, some very scary for me to be doing!!! In the end I just gave up for awhile. Finally last night I had the idea to see if WD had any updated software for the "WDSmartware" that was causing the problem, and sure enough WD has issued an update for mac using Mavericks. I downloaded and installed the updated version, then turned right around and found 2 uninstall options so I used both and "Voila" no more WDSmartware running in the back ground.
Hope this helps anyone else having the hi temp problem.
take care
Pat