How to Fix Port Audit showing ports not installed on a system

[dweimer]

I have a system that I just recently setup port audit, after realizing I 
forgot to install it on the machine.  The problem is that it is finding 
vulnerabilities in several ports that are not installed on the  system.  
These may have been installed at   one  point and removed.  Firefox is 
one of the ones listed, I know that it was on the system previously, but 
was removed a few months back.  portmaster -l and pkg info don't list it 
as installed,  but port audit shows: firefox-20.0,1.  Where would 
portaudit be picking up these ports from?  Is there anyway to reset its  
database?

-- 
Thanks,
    Dean E. Weimer
    http://www.dweimer.net/