On 08/05/2012 11:07 AM, Andrew Lowe wrote: > I then run the emerge again and for some reason it wants to rebuild > perl again, a different version to what perl-cleaner rebuilt.
That sounds very strange. Why should two versions of perl be fighting for top dog on your machine? The only reason I can think of at the moment (being sadly without either Tokay or chocolate to stimulate my brain) is that you may have masked or unmasked one or more versions of perl or a perl package for reasons long forgotten? I use something like 'grep -r perl /etc/portage/*' to check for packages I masked/unmasked and then forgot about. Which two versions of perl are competing, and also what arch and gentoo profile are you running?

