1. do I ever have to delete cookies or cache in a mac like with windows? I use ccleaner for xp. 2. Does a Mac ever need adjustments to keep the speed up? Like defragment the harddrive. 3. Once I delete a file on a Mac I have heard that is gone for good and xx's cover up any trace of the contents of the file. Is this true? Like if I sold my mac would the new owner be able to look at my files? 4. if I upgrade to 2 gb ram will it open web pages faster? Thanks for any input. I'm a super newbie. I have a 2.0 white macbook with 60 gb harddrive and 512mb memory.