Home page is pointing to a post or category after upgrade

I upgraded to WP 3.0 yesterday and ever since my home page is pointing to a page instead of my URL. Please help. I’ve only been with WP for three months and I have no idea what to do at this point. Can I downgrade back the older version? How do I redirect the homepage to the proper url?

Thanks.

Melissa

https://www.smittenbybritain.com

By the way, I deactivated all the plug-ins with no effect. Also tried deleting page the home page was pointing to, and the home page just redirected to another page.