hi, i have recently finally acquired an install dvd for tiger. i havent needed one for the 3 years i owned my mac which speaks alot! ANYway, there is one problem. about 4+ months ago i started noticing little quirky behavior with my g4 powermac nothing major. jus temp. slow downs then more recently whenever i played video i couldn't get through a full length movie w/out freeze and reboot at least 3 times. eventually it died due to power supply failure so i chalked it up to that. i bought another g4 powermac this time dual 800 quicksilver running dual screens and used my old HD as the target drive. ran alot smoother. but now after a few weeks it slows to a crawl sometimes and comes out after an hour or two. i'm not sure why. force quitting apps doesn't seem to help and takes about 5 minutes apiece. my most major problem (i think) is that whenever i repaired permissions "./private" always needed repairing, even when disk utility was run back to back. that was on both machines. the second things is that when i first recieved the first powermac, its name was "macmac" i didn't realize you couldn't just rename the user folder, until AFTER i had changed it to "toby", and then did some reading because the computer name still wouldn't change. apparently it has bad effects but since i didn't experience any, i left everything alone even till today with the name discrepency. but i still want to match it up to a name of my choosing. SO, i want to install tiger but i have no idea what will happen. my questions are these: -will i have to re-register, and re-install all my apps? -will i lose data on that HD, bookmarks etc? -i assume i will lose saved preferences? -will i losed the preference planes themselves? (like ATI radeon card, shapeshifter, xbox contoller interface etc.) -will i be able to change the computer/user name to match during the install? -will it correct the permissions for "./private", since no matter how many times i run disk utility back to back, it repairs it over and over. -what im thinking is to reinstall tiger so that it will fix any corrupted files, glitches, scripts whatever, and i can resolver the computer/user name thing. am i right in thinking this will do it? if you read the whole post you will see i have never even popped an OSX disc in before so i have no idea what to expect or look for.