- app-editors/mousepad-0.2.16-r1 (masked by: package.mask)
/usr/portage/profiles/package.mask:
# Samuli Suominen <ssuominen@gentoo.org> (22 Jan 2011)
# Printing is broken because of xfprint requirement.
# Package is using deprecated libxfcegui4 instead of libxfce4ui.
# No development in about year at upstream git.
#
...
# Masked for removal in 30 days.

With suggestion to fall back to oryginal (app-editors/leafpad).
But I don't want to use any other screen simple text editor.
Hope, issues will be fixed soon and mousepal will return back into portage tree.