Outlook 2007 NIS anti-spam issue

Everything was working fine.  And I don't remember from when, but now the Norton toolbar has greyed out "This is spam"  and won't allow me mark anything as spam.  Yet, if I click on my "Junk E-mail" folder, it will allow me to click on a message and use the button "This is not spam" and "Empty Spam folder" buttons.  Anybody know how to fix it so I can mark things as spam again?