Zimbra 5.0.4.

I have a user who can no longer login to the AJAX client using Internet Explorer 7. We've cleared cookies and cache and temporary files through the browser.

She can get to the login page, put in her username and password, and it starts to go to the AJAX page and then logs back out and she's back at the login page again.

Firefox seems to work ok from her office, but she tried it at home and it's doing the same thing, so the AJAX client doesn't work at all from any browser at home.

She can log in to the Standard(HTML) client just fine.

Is there anything on the server that is getting cached that would do this to someone's account?