office xp instals every time user logon

Every time a user logs onto a workstation and starts outlook the installation wizard comes on requesting the office xp disk. not a full install but similar to a new user profile update or a feature ionstall. however this is the same user everytime. this also happens with publisher 2003.
I have done a full install of both products but no luck there. i used to think a full install was a FULL install. apparantyl microsoft and me have a difference of opinion onn that.

i have done extensive searching on this to no avail please help!!