The following installed ports are outdated:
ghostscript 9.00_3 < 9.00_4
gnome-doc-utils 0.20.1_0 < 0.20.2_0
nkf 2.1.0_0 < 2.1.1_0
orbit2 2.14.18_0 < 2.14.19_0
pTeX 20100522_0 < 20100929_0
tcl 8.5.8_0 < 8.5.9_0
tk 8.5.8_0 < 8.5.9_0
xorg-libX11 1.3.6_0 < 1.3.6_1