Vista - Can't delete some shortcuts in the fonts-folder

Hello,
I can't delete font-shortcuts in the c:\windows\fonts\ folder. Normal
fonts - no problem. I believe I have full administrator rights and
everything. When trying to delete the font-shortcuts, nothing happens, no
dialogue, nothing. When trying to grab and drag the shortcuts, they get a
small red forbidden icon in the corner.

I noticed one strange thing though: When I rename the folder containing the
original fonts, which the shortcuts in the fonts-folder are pointing to, the
shortcuts in the fonts-folder disappear. When I rename this folder back to
its original name, the shortcuts magically appear again.

Does anyone know what's going on?

Thanks,
TurboTape