Had my 2.16 ghz Intel Core 2 Duo 21" for two years. Installed software to monitor temperature, etc. The computer reads 90 degrees when I turn it on and up to 125 degrees after an hour or two. Another issue, when I turn it on, it takes about one minute for all the items to appear on the desktop and before I can open Safari, Word, etc. (is this a long time??). During this time there is a very repetitive soft clicking sound coming from from the computer, (as if things are opening or being shuffled around?). History: I had Microsoft Office installed but removed it some time ago. Only 10 gb free on the 250 gb hardrive. Any suggestions much appreciated!