Users are unable to checkout or commit any changes to a CVS repository with the 1.11.5 version. The new version of CVS includes a --with-tmpdir on the configure which sets it. The ebuild doesnt set it, so it defaults. I have confirmed that it did not exist in 1.11.2 Change your ebuild for 1.11.5 to src_compile() { econf --with-tmpdir=/tmp || die make || die } And remerge. This fixes the problem.
*** This bug has been marked as a duplicate of 14287 ***