Do you wish to disable the tab preview in Windows 7 when mousing over the Internet Explorer 8 icon on the taskbar when you have more than one tab open?  Well there is a setting to change that which seems obvious in hindsight.

Open IE8 and click on Tools, then Internet Optioons.  On the first screen there should be a Tabs section – click on Settings.  In here simply untick the box next to “Show previews for individual tabs in the taskbar” and then restart IE8.  Now you won’t be shown a list of all the open tabs but instead the last active one just like it does in Vista.