Cisco VPN Client freezed on "Opening cert store"

Recently my Cisco VPN Client freezes on this screen for about 5 minutes, reporting only
"Opening cert store".

It occurs due to having multiple certificates in 'my user certificate' store that the client parses through on load. This may occur if you have Fiddler installer, because it creates as many certificates as the number of websites visited using it.

To solve this issue:

sorry for images, I have only Italian Windows @ office :-) 

1. open command prompt
2. type mmc [enter]
3. File---> Add remove snap-in...
   
4. Then add Certificates ---> user's account certificates
   
5. And finally delete Fiddler's certificate. No mercy!

Now your Cisco VPN will work again as it should!