Expedia Site won't work with my Mac

All as an update, below is what Expedia had to say:

"Dear Expedia Customer,

Thank you for contacting Expedia.com with your questions about system
requirements.

Here are the minimum system requirements to run Expedia.com:

- -A computer running a Web browser that supports frames.

We also recommend:
- -A display resolution of 800 x 600 or greater. Expedia.com will run
at 640 x 480, but you may need to scroll the Web pages right and left to
see all the information when using this resolution.

- -A browser supporting Secure Sockets Layer technology.

Windows Internet Explorer is the preferred browser.

If you have further questions, feel free to reply to this e-mail. You
can also visit the Expedia.com "Customer Support" page
( http://www.expedia.com/daily/service/default.asp) for more customer
service information."

Doing some research, I'm wondering if it's an SSL problem because I'm good with everything else they told me.

I don't currently have any certificates in my keychain.

Question has been answered by browsing for another user's mention of the problem. It boiled down to the use of Intego's Netbarrier. I unchecked the option of not blocking the sending of my type of computer and browser. Expedia now works again!