HOTFIX: When you use IE7 to browse a Web page, the state of the "Edit with <HTML editor>" command on the File menu may be inconsistent with the state of the "Edit with <HTML editor>" command on the Page menu
You use Windows Internet Explorer 7 to browse a Web page, and you examine the state of the Edit with <HTML editor> command on the File menu. However, you notice that the state of this command is inconsistent with the state of the Edit with <HTML editor> command on the Page menu. For example, the Edit with Notepad command on the File menu may be enabled, while the Edit with Notepad command on the Page menu is disabled.
Additionally, the state of Edit with <HTML editor> command on the Page menu will vary from disabled to enabled if either of the following conditions is true:
• You refresh the Web page in the current Internet Explorer window.
• You open the same Web page in another Internet Explorer window.
Note The <HTML editor> placeholder represents a program that you can use to edit HTML files. For more information about how to specify the HTML editor, see the "More information" section.
http://support.microsoft.com/default.aspx/kb/939946