I had the problem too and it disappeared when I fixed a problem with my terminal by pressing ALT+F2 and pasting gconftool --type float --set /desktop/gnome/font_rendering/dpi 96
I had the problem too and it disappeared when I fixed a problem with my terminal by pressing ALT+F2 and pasting gnome/font_ rendering/ dpi 96
gconftool --type float --set /desktop/