ok, i will try to explain this as best as i can i used to have a powerbook so its name was eg "john's powerbook" i had my user account on it and of course a keychain with my passwords when the time came to upgrade and get the macbook pro i now have, i backed up my keychain using Backup (didn't feel like trusting it to .mac at the time) along with my other files, formatted the powerbook and sold it. when i got the macbook pro i transferred my files back, my old keychain along with them. at this point i have to say that i did have some issues with folders and files being locked to the old account, which i resolved by unlocking them with the new password and changing the permissions. i didn't have any such problems with the keychain to the best of my memory (this was 2 years ago roughly) today i decided to start backing up my keychain along with everything else using mobileme and lo and behold, when i checked the box and hit "sync now" it asked for my old mac's password... i clicked on "advanced" and removed the old mac from the authorised computers but to no avail, it still didn't work... so i entered the old password and it seems to sync fine... question is, did it sync fine? and am i stuck with this old mac's "name" and password for the rest of my life now? i'm guessing the keychain has retained the "owner" from the old mac, but i have no idea how to change it... help? btw, i tried copying the keychain file from ~/Library/Keychains and deleting the "login" keychain, i then brought it back in... and when i log in to mobileme from the system preferences it says that there was a problem saving to my keychain... wtf?