I have a 2009 mp . Previously I screwed up the permissions by mistakenly adding a 2nd account. I used batchmod and opened them up, but the I guess I didn't do it correctly because many other things didn't work. I wiped the startup drive, did the clean install and left the other drives with the photos alone. I went to preferences and retrieved the printer, firefox and mail settings. For the tiff and jpeg images I changed the default program to PS and then found the retched 'custom access' on the tiff & jpeg files. The psd images are fine. All the images are on a separate drive I went to repair permissions and there was one unrepairable. Warning: SUID file "System/Library/CoreServices/RemoteManagement/ARDAgent.app/Contents/MacOS/ARDAgent" has been modified and will not be repaired. Also when I need to do anything that requires the password, my name appears instead of the computer name and putting in the password for either of those computer names works. Is that a problem? My question is did I screw it up by changing the default settings for the tiff & jpegs? Do I need to do the clean install again to repair? What about just a reinstall? What about the unrepairable permission? I can get around the permissions by doing a "save as" under a different name if I have to. Any advice would be greatly appreciated.