I also use most applications through LXDE (ho ever, I actually run Iceweasel via shortcut, which is debbie equivalent).

The problem with gconf2 is (was?) much worse - last time I checked, after installation of LibreOffice I got 3/4 of application menus unusable (blank "----" lines or unspecified characters instead of proper text). This is the symptom I remember from top of my head, qole would be - probably - capable of more techie explanation.