Safari and Single Sign on Certificates

Hi Experts,

I use service.sap.com in Safari Browser (Lion 10.7.3) internet page & under the below given circumstances, I have a problem loading the page.

Step 1: Install Firefox (any version) for Mac. Open the service.sap.com internet page and register for Single Sign on Option with the website. After the SSO certificate is added, you may close the firefox.

Step 2: Open the Service.sap.com website in the safari browser. Browser automatically opens a popup to choose the certificate for single sign on. Choose Cancel in the Pop Up window. Now the page won't load. But if you do the same in the Firefox, the page loads properly. I have tried in Microsoft Windows with different browsers including Google Chrome, Firefox , Internet Explorer 8 and above - all these working correctly by loading the page without the certificate.

I also could not register for Single Signon from a Safari Browser in Lion 10.7.3;

Any expert advice is very helpful

Thanks

Kasee