What happens when you try to sign in? In my experience, Chase uses multiple servers. Sign-in does not occur directly on their main www.chase''.''com site, even if it appears that way at first. The sign-in form actually is an embedded page from a different server. To pop the frame out into its own tab, right-click a blank area of the login form, expand the This Frame menu, then click Open Frame in New Tab. Does that make any difference? Another factor might be restrictions on storing cookies and site data, but let's come back to that possibility.