Fresh Windows 7 installation. I gave "everyone" "full control" to drive D:. When I print from Firefox to a PDF document on D: everything is peachy. If I try to do the same thing from IE9 I get a message
You don't have permission to save in this location.
Contact the administrator to obtain permission.
So it's not the PDF printer driver which doesn't have permission, but IE. How can I give IE (and if possible all my applications in one go) permission to write anywhere? Read: I don't want to see that warning ever again.