Can’t get my RSS feeds to work

Hi

I’ve just set up my first WordPress site and all’s well apart from the RSS feeds. When I try to subscribe I get the following message:

Safari can’t open the page “feed://www.findaporsche.com/?feed=rss2”. The error is: “The feed could not be loaded because the content is not in a known feed format.” (PubSub:2) Please choose Safari > Report Bugs to Apple, note the error number, and describe what you did before you saw this message.

Any idea as to what’s wrong?

Thanks

Phil