As I mentioned previously, you also want to fix these, your search page has been hijacked.
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar =
http://www.shopnav.com/search/9886/search.html
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page =
http://search.shopnav.com/apps/epa/...shnv9886&s=
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page =
http://search.shopnav.com/apps/epa/...shnv9886&s=
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant =
http://www.shopnav.com/search/9886/search.html