By default, upon copying and pasting multiple items in Office 2000+, Office will automatically display an extended version of the Windows “clipboard” to the right of the screen. Using the registry editor, it is possible to disable this behavior. (Note that disabling this behavior will not remove access to the Office Clipboard, just the default behavior upon multiple copy+pastes) Go to Start -> Run ->
regedt32 -> HKEY_CURRENT_USER\Software\Microsoft\Office\9.0\Common\General
and create a new DWORD “AcbControl” set to 1. For the changes to take effect, you must start Office after the registry changes.