Hello everyone. I just recently installed Lion on my new MacBook pro. Prior to installing it, I tried making a copy of my system in case something went wrong. I cancelled the copying process before it was complete, and when I went to delete the copied items I most have deleted some of the originals. My system password still works, but keychains are completely screwed up. I tried creating a new login file in the keychain but it won't let me, so I can't save any passwords. Also, Text Edit and Preview can't open. The apps disc that came with my computer is of no help since it requires the older operating system. If I install the original OS with it make duplicates of things? If I than use the app disc, will it only install what is missing or will I have duplicates of apps as well? Also, could installing the original OS and than installing Lion again slow down my computer or affect it in any other negative way? Thank you for any advice you can give.