**Disclaimer** I have searched the archives, and I found a lot of stuff on this, but none of them specifically answered my question. Just trying to avoid the flames. ******* Anyhow, the other day I was in root (please don't ask why) and I think I may have done something wrong. Since then, I seem to get a lot of crashes and my system seems to be crawling at times. I have repaired permissions, cocktailed it, etc, and it still just doesn't feel right. I have two users on this iMac (my roomate and I) and we don't want to lose a thing if I reinstall Jaguar. I read somewhere that all you do is pop in the CD and it will simply replace what is "broken," without changing settings (etc. my Apache settings) or deleting anything at all. I am a recent switcher and have never installed a Mac OS, so I am scared to do this. Sure I will back my stuff up, but is it really as easy as popping in the CD and reinstalling? Thanks.