File Share Encryption

I'm getting the prohibitory sign on a macbook pro (13-inch, Early 2011, core i7) after encrypting the laptop. I have lion 10.7.2 installed on it. This is the second time this has happened on this laptop. The first time I decrypted the laptop  and uninstalled PGP and reinstalled it. Worked for a couple of weeks and then it got the prohibitory sign. I've installed the 10.2.0 MP2 (Build 2068) version of PGP.  Anyone have an idea as to why i'm getting the prohibitory sign. Note, I used the PGP recovery disk to get past the prohibitory sign and login to the laptop but I don't want to have to do that everytime.

whats the prohibitory sign? 

authentication issues at bootguard?

Anyway, upgrade to 10.2 MP3 , our latest version includes lots of fixes for MAC stations.

As Julian had stated. You will want to upgrade to 10.2 MP3 for the latest fixes on Mac OSX Lion for new i5/i7 macbooks. But if the problem persists, it may be beneficial to try decrypting and re-enrcrypting using the PGP Desktop UI in Mac OSx.  That will rebuild the BootGuard filesystem and reinstrument the drive as well.

Edit: January 15th - If you are unable to boot from your Mac still. I would try burning a recovery image here and using that to boot off of. DON'T DECRYPT with the recovery CD unless that is a last resort...

Be sure to use the correct recovery image for the version of PGP desktop that you had installed:

http://www.symantec.com/docs/TECH176187

@Julian The "prohibitory sign" that he is talking about is that red circle through the line through it that we seen recently with newer i5/i7 macbook pro's after encrypting them. What we often refer to as "bricking" the machine.