<quote>
PGP Desktop Professional 9.0 Trial Software is an improved version of
the legacy PGP Freeware (Desktop 8.x and below) product. With PGP
Desktop Professional 9.0 Trial Software, all product functionality is
available for 30 days. -- *After 30 days, PGP Desktop Professional 9.0
Trial Software reverts to the functionality available in what used to be
called PGP Freeware.* -- At the end of the trial period, any local disks
that have been encrypted using PGP Whole Disk Encryption, will
automatically decrypt.
</quote>
It's dual lincesed. After 30 days i becomes freeware. So it's a free
lite/light version.