OKB-107: Resolving problems with the IE toolbars being out of sync
Internet Explorer stores some toolbar data in a cache that can sometimes get out of sync with the registered toolbars. By deleting a key in your Windows registry, you can clear your IE toolbar cache. IE will reset the cache the next time you launch it.
Close all your browser windows.
Open the Windows registry editor by going to Start > Run and typing "regedit".
In the folder tree on the left side, navigate to HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser\
On the right side, select ITBarLayout and delete it.
Launch a browser window and see if that fixed the problem.
Some toolbars may no longer by visible but you can redisplay them using View > Toolbars. The toolbar positioning may have changed as well. To reposition them, make sure that the "Lock the Toolbars" option in the View > Toolbars menu is unchecked, reposition the toolbars as desired, then check the aforementioned "Lock the Toolbars" option to save the new positions. The check marks in the View > Toolbars menu should now appear correctly only beside the toolbars that are displayed.
WARNING: If you use Registry Editor incorrectly, you could cause serious problems that may require you to reinstall your operating system. Onfolio strongly advises users to backup their registry before making any changes. Here is a link to a Microsoft site outlining registry backup techniques:
http://support.microsoft.com/default.aspx?scid=kb;EN-US;256986#Topic2
