PGP Disk

Has anyone had the chance to try out the new McAfee PGP disk? It seems pretty straightforward, allowing for the creation of encrypted "drives" using the CAST algorithm. Is anyone aware of any security flaws with it?

I'm sure somebody will check if they are bored some day. Where can we find the source code? If the source code isn't available, don't trust it. That's a good general rule.