I have a 700mhz eMac (gforce graphics card) that isn't working well. It seems to pause on almost every function (opening apps/web-browsing/file transfers etc...). It pauses for a few seconds of extra loading time, clicks once and runs the requested function. I am wondering because of the click sound if it may actually be the hard-drive causing the pausing issues (as processor/loading noise on macs is generally silent). I have done all of the disk utility fixes etc. with no positive results; disk utility can not find any problems with the HD. Another problem is that it is very finicky with booting from the optical drive, so I am somewhat worried about replacing the HD with a new one and having to re-install. I could care less for the data that I have on the current HD, so I am open to any option.