I am confused by this thread. Running Preferential Treatment I get the same exact error message about the same file "/cov.apple.systemloginitems.plist". AppleJack also say the file is corrupt and says it will remove the file to /Library/preferences (corrupt) folder, but then says the file could not be moved. The (corrupt) folder is created but no file is in it.
I am also using Leopard.
I am also using Leopard.