Few days ago there was some important perl update: Thu Sep 5 22:23:09 2013 >>> dev-lang/perl-5.18.1 And today I noticed that my rrdtool stopped gathering data. I got the idea, that it was perl-related (the script is written in perl [1]), but didn't get the missing link (I was like „wtf perl? needz to perl-cleaner --all?”, but it didn't work out). But then, in a flashback, there it was, some @preserved-rebuild… so I tried a simple emerge -1 rrdtool and it's working again. Would be nice, with all those slots, auto-rebuilds and other magic to do the trick and rebuild rrdtool as well. ;) [1] http://martybugs.net/electronics/tempsensor/download/rrd_tempsensor.txt
That is what perl-cleaner is for. You should run it after you update dev-lang/perl. *** This bug has been marked as a duplicate of bug 41124 ***