Proglems with login doing checkout

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Run bookstore app, access /products.html. Be sure you're not logged in
2. Put 1-2 books in the cart
3. Go to cart, do "checkout"
4. Browser login window appears

What is the expected output? What do you see instead?
I can log in, e.g. using default admin/admin

What version of the product are you using? On what operating system?
CRX 2.1.0

Please provide any additional information below
If I go to "login" link I can log in using admin/admin

Original issue reported on code.google.com by gklebus%[email protected] on 5 May 2010 at 5:03