My issue is that I've seriously busted all of the owners and permissions on my user folder and subfolders and it's causing lots of issues using lots of applications.
The initial cause was that I had renamed a user by following the Apple support instructions at http://support.apple.com/kb/HT1428
After the new user was set up, Mozy backup wouldn't backup any more and lots of my applications couldn't update themselves automatically. The application usually started working again if I deleted the offending program and reinstalled it. I thought it was because the permissions were wrong and I found some places where GetInfo indicated that permissions were referencing the old user. Sometimes the dialog just said "Fetching" for the username and never updated to anything else.
I ran Onyx "fix permissions" and Disk Utility "Repair Permissions" with no results. With "Repair Permissions", it keeps throwing some info warnings about unexpected ACLs, but the info I could find online didn't think those would be causing issues like this.
I tried to recursively run some command line scripts on the user folders (both logged in as root and using sudo). chmod got lots of errors about the owner of the files being wrong. chown after that gave me other errors (I can't remember exactly what they were). In a fit of panic, I right-clicked the entire user folder and chose to apply it's permissions to all children.
From what I can tell, when I did that, I set everything to Read&Write for that user and Read-Only for "everyone" and "staff". Now, I'm worse off than before. Firefox crashed and it can't even update it's own settings so it brings up the "Do you want to restore these tabs" every single time it launches, even after repeatedly saying "Start New Session".
Basically, everything in my user folder is broken with regards to owner and permissions and I need to know what they are supposed to be. Who is the owner of the files in each directory supposed to be (Downloads, Applications, etc.) and what should the permissions be? Given those permissions and owners, what is the best way to go about setting those all right?
I saw a question similar to this at Resetting user permissions to their default mode but it only addresses permissions, not owners, which has been an issue already.
I'm not sure if reinstalling the OS over the copy I have right now would fix anything and I'm close to calling Apple Support if I can't figure anything out in the next few days. Thanks for any help.