All,
please note that PGP Whole Disk Encryption Version 10.2.0 and earlier are not compatible with the latest Mac OS X Lion release.
More detail can be found here: https://www-secure.symantec.com/connect/blogs/chicken-or-egg-upgrading-os-x-lion
.andi
SEE 8.0.1 on Mac OSX 10.7 Lion is also not compatible for the moment.