>...That key combination also works on the Vista and Server 2008 desktop icons.
>
>>>There is some kind of a ghost key I am hitting sometime which I am not even aware of. When this is effective, the font in Internet Explorer is diminished. The only way I have found to rectify that is to close the browser and open a new instance. Until version 7, this was only necessary to the actual window. If I had other windows opened and only opened a new Internet Explorer window, the font was back to normal. Now, with IE 8, this is reflected to all upcoming windows until I close them all. Anyone knows something about that?
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>>If you press the Ctrl key and scroll the mouse wheel it will have this effect.

Under Tools>Options you can select "Reset text size to medium for new windows and tabs" but I don't know of any way to prevent the behavior in an existing window.