Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
Yes, the problem is with the website (expired certificate on that website).
Not a Safari problem, but Safari warning you of the possibilty that website may not be what you think it is.
I think that's a Good Thing™
The message tells you how to proceed -- you can continue on to the website, as long as you understand the risks.
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.