Perhaps when you get to the "you're logged in" screen you could hit the logout button in the top right of the Ihub header on the page. Then close and reopen IE, serf to Ihub and see how the login does then...
Otherwise you might try clearing cookies and cache. I know that's a pain but it might help.
I have also resolved some other issues with the "compatibility settings" in the tools menu. Add advfn.com to the list there. That is a long shot as my IE10 works fine w/o this setting...
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