permissions and keychains after mavericks

Hello all

Since upgrading to Mavericks I've had some odd issues going on involving permissions and keychains. On each of my iMacs, I've actually had to go in and change the permissions on the keychain folder to allow my user profile to access it, and on one of them I am still having an issue of having to enter some passwords from memory rather than having them auto-fill. Also, many folders' info panels list their permissions as "custom access" but don't present the padlock-and-userlist thing for editing permissions. It happened that last week I was unable to move a file from an external NAS volume because (even though I was logged in and normally have admin privileges on the volume in question) Mavs said I didn't have permission to read the file, and would not let me access the permissions panel in show-info. The file was video, and I could play it, but was not allowed to move or copy it.

Weird.

If there is some obvious measure I should take or some useful tool I should know about, please let me know

Thanks!!

Eric D