I have recently upgraded to version 7 of Smart Security - on both my PC and laptop.
I use a program called LocknGo: hxxp://www.keynesis.com/ to protect my portable hard drive.
Since the update the program won't unlock my hard drive with anti-virus enabled. I disable protection and it works.
Now, I have the same setup on my Laptop and that works fine without having to disable protection.
I have tried adding that program to the exclusions but that doesn't help... Any ideas??