(No) icons in GTK buttons

I don't know if this has anything to do with the no icons in menus issue, but the solution is darned near the same. I noticed that my Ubuntu Karmic doesn't serve up icons in its buttons with GTK apps in GNOME. The fix comes from someone trying remove his icons:

There is now a new key in GNOME Configurator Editor. Below are the steps to disable buttons on icons in GNOME 2.26 and above.

1. Press Alt + F2
2. Type gconf-editor and hit Enter.
3. Go to Desktop –> GNOME –> Interface
4. Uncheck the key buttons_have_icons

Just check the box to get your icons back.

via Manas T