>=media-fonts/liberation-fonts-2.00.0

# 310M Optimus BUG: unable to handle kernel NULL pointer dereference at (null)
~x11-drivers/nvidia-drivers-340.76

# Temporary masking higher slots for successful upgrading
app-text/poppler:0/52
app-text/poppler:0/53
media-libs/libvpx:0/2