I have read and initiated all of the suggestions in the sticky about secure websites on this forum. When I'm at auduble.com and click the "sign in" link, the URL briefly changes to the sign in URL and then reverts back to the home page. Strangely, this is the only site I have a problem with. I am using Win 7, IE9, Norton Internet Security. The problem started after I upgraded to IE10, although am not convinced that was the cause. I did a Reset on IE, then reverted back to IE9 and then IE8 with no luck, so upgraded to IE9 for now. I have done complete scans with NIS, MalwareBytes, MalwaeBytes Anti-Rootkit, Super AntiSpyWare, Microsoft Malicious Removal Tool. I have deleted all cookies, history, temps, MRUs, etc using CCleaner, Disk Cleanup, ATF Cleaner, and IE's browsing history delete. I don't have this problem with Firefox or Chrome. I am good at keeping a clean computer and frequently clean up other people's computers, but I have never seen this problem before. Any suggestions?