My iBook 900mhz G3 has been beach balling for every app recently(and i hear it accesing the HD more often). I ran Xbench and noticed that the HD scores are drastically slower than the last time i ran Xbench a year ago. HD memory score dropped from a 50 to a 39. Is this to do with the 10.3.8 update? Is this the sign a of a failing/slowing HD?