https://github.com/munin-monitoring/munin/tree/2.0.28 as munin-2.0.25 is released at 2014, I think it's worth for an update
https://github.com/munin-monitoring/munin/blob/stable-2.0/ChangeLog
Stable version 2.0.33 fixes some Perl warnings for me here. One patch required an update, else the patchset was OK, updated tarball: http://dev.gentoo.org/~voyageur/distfiles/munin-2.0.33-gentoo-1.tar.xz I did not look further in the ebuild though, just checking that it works for my small setup
munin 2.0.33 is now in the tree.