My guess is that you manually installed modules using the cpan tool into your vendor Perl. The vendor Perl belongs to the vendor and you should only install modules into the vendor Perl by using the vendor tools (like apt-get, yum or rpm). If the vendor upgraded some library that perldoc depends on, you might now have conflicting versions of the library or libraries that depend on the upgraded library.

Maybe it already is enough to remove /home/xxxx from the search path (whatever that search path is).