Yes, and under OS X Lion, FileVault2 is apparently a complete rewrite of the earlier FileVault, and it appears to be solid. TrueCrypt is also an excellent (and multi-platform) alternative.
But using whole-disk encryption doesn't invalidate my comments about Spotlight and Versions. When you've logged in (i.e., mounted the encrypted volume), Spotlight and Versions will still be storing pieces of yours files in hidden locations, you still can't truly delete a file without a lot of know-how, etc.
But using whole-disk encryption doesn't invalidate my comments about Spotlight and Versions. When you've logged in (i.e., mounted the encrypted volume), Spotlight and Versions will still be storing pieces of yours files in hidden locations, you still can't truly delete a file without a lot of know-how, etc.