Apart from being able to encypt an entire volume, what are the other differences of FileVault 2 over FileVault? Does FileVault 2 in Lion have any other differences compared to the old version, FileVault in previous releases of the system?  Are there any additional benefits to using the new version?
Password less 'Guest' accounts can no longer be created since the whole disk is encrypted than just the User's home directory. It's sad that I could not find any information on the kb article in Apple about this.