Originally Posted by Skydog
That is indeed curious as I am using Firefox too.
Maybe it just doesn't look secure to you because the newer versions of FF no longer display the little lock icon on an https URL and instead changes the background colour of the sitename?
When you click on that coloured portion in the address bar, a pop-up box should show up giving details of the site's security certificate and you'll see the little lock icon there, or a warning if it's actually not secure.
Perhaps you could try again and see what it says?
When I try it now, FF tells me that the page I get from adding a book to the basket which goes to bridgit.geredonovan.com is verified by GeoTrust and when I click for more info, tells me that it's "high grade encryption" with "RC4, 128-bit keys".