Filevault is too much of a good thing but slowing down your system and making Time Machine backups difficult if not impossible. No security is also no option, so I thought about creating a sparse image for just a few selected datasets, like mail, calendar, passwords and adressbook. Why should I encrypt 120 Gig when only 8 Gig should be encrypted? The sparsebundle is mounting automatically using a password from the keychain.
I found it, however, difficult to create the correct links that replace the original files.
A Mac OS X hint fortunately explains, how to do that Continue reading Optimized data security under Snow Leopard →