Hi !
I am having exactly the same problem ! Cntrl+C , Cntrl+V only paste values. If I try paste special, only unicode text or text are shown as possible values. Pasting to other applications only does text (and no longer images, metafiles, etc as it used to be).

Perhaps I am having exactly the same situation Keith has, the only difference is I do not have any clue on how to trace but other program could be generating the mess hijacking the clipboard !

Regards
Andres