http://news.com.com/Spoofing+bug+found+in+IE+7/2100-1002_3-6129626.html?tag=nefd.top (http://news.com.com/Spoofing+bug+found+in+IE+7/2100-1002_3-6129626.html?tag=nefd.top)
mitch
MSRC: IE Address Bar Issue (http://blogs.technet.com/msrc/archive/2006/10/26/ie-address-bar-issue.aspx)
Also see Help safeguard your personal information online (http://www.microsoft.com/athome/security/online/site_spoofing.mspx), in particular the section on Spoofing attacks.