Safari can't verify the identity of website. What to do?
I am getting a "certificate invalid" message using Safari on a number of sites, including my bank, Apple iTunes, insurance company, and many others. The message is: "Safari can't verify the identity of the website (then the specific site is named)". I have spoken with my bank and they say it is an issue with Safari and I should try another browser. I tried Firefox and the connection to the sites is perfect, no issues or warnings at all. What is wrong with Safariu and what, other than stop using it, can be done to correct the certificate issue?
OS X Mountain Lion (10.8.5), iMac, MacBook Pro, and MacBook Air