Website Certificate Issues.

[Slime]

Today I've been unable to access Europeantour.com's Fantasy page.
I got the following error message,

sec_error_revoked_certificate

I had this message on two seperate computers on two different networks.
I found a solution via google, but I'm not overly happy with it.
I had to go into my browser's advanced options and uncheck the option that says;
'Query OCSP responder servers to confirm the current validity of certificates'.
Am I leaving myself open to security issues?

 

[ScienceBoy]

Did they not pass a re-test?

I print out my certificates and put them on the wall.