I have had FileVault enabled for the last few versions of OS X and I like it but I do have a couple concerns that may have been addressed since Apple released FileVault 2. For instance, as I understand it, FV2 unlocks the entire disk once you have logged in. How protected am I if my Mac goes to sleep or the screensaver kicks in or I'm otherwise "logged out"? Isn't the disk still mounted and unlocked under these circumstances? Is shutting down the only way the data is really protected? What do you other FileVault users do? Shutdown all the time? Or trust that sleep/log out is "good enough"? Thanks!