I have a Macbook Pro, (one of the first ones that came out,) and am running OS 10.4.11. 1. What are the things one should periodically do in order to keep one's macbook happy, fast, and healthy? (Emptying caches and restoring stuff, etc?) Please be specific -- not hugely computer proficient. 2. What is the best way to keep the hard drive from unnecessary stress, in order to prolong its life? (How do I make sure it rests as much as possible?) 3. Is a screen saver a good thing, or is it better to just set the screen to turn off when idle? 4. The desktop -- does it care if you use photos as a background rather than the regular mac thing? Does using photos take away too much memory? 5. How often does one clean one's mac, and how? (I use iClear about once a month, and I blow it out as well as I can.) 6. This computer gets incredibly hot -- I have a little fan blowing on it, but is that normal, and what can be done to cool it off? 7. Is there any virus danger for macs? How does one know if one has a virus? 8. What are the most taxing things on a computer? Playing video? Music? Running big programs for a long time like Photoshop? 9. Is it a good idea to always accept updates? That's all I can think of for now -- please feel free to share any tips about anything macbook pro maintenance related, even if I forgot to ask. Thank you.