PGP 10.0 is now out of beta and shipping for Snow Leopard. The new version includes several nice upgrades including support for Boot Camp, Windows 7 (32 & 64 bit), and Linux support. I've been running the beta a few months and had no troubles. Encryption and decryption are faster and PGP reports there are additional safeguards against boot disk corruption. If you have sensitive data on your Mac, I've found no better solution than PGP.