This is strange - I've set Libertine font (package linux-libertine) as applications font only to realize most Gnome applications (nautilus, some applets, gconf-editor to name a few) are segfaulting as a result.
Please try and see for yourself. I hope someone else can confirm this bug. (WARNING: If you do, you probably won't be able to recover easily as gnome-appearance-properties can segfault as well. Quick and dirty solution is to remove linux-libertine font and run g-a-p again to restore your fonts setup.) I'm running AMD64, almost up-to-date unstable + experimental mix. Vit
