Gentoo collisions

IO-Compress collisions...
 * Detected file collision(s):
*      /usr/lib/perl5/vendor_perl/5.8.8/IO/Uncompress/RawInflate.pm
 *      /usr/lib/perl5/vendor_perl/5.8.8/IO/Uncompress/Inflate.pm
 *      /usr/lib/perl5/vendor_perl/5.8.8/IO/Uncompress/Base.pm
 *      /usr/lib/perl5/vendor_perl/5.8.8/IO/Uncompress/Unzip.pm
 *      /usr/lib/perl5/vendor_perl/5.8.8/IO/Uncompress/Bunzip2.pm
 *      /usr/lib/perl5/vendor_perl/5.8.8/IO/Uncompress/Gunzip.pm
 *      /usr/lib/perl5/vendor_perl/5.8.8/IO/Uncompress/AnyUncompress.pm
 *      /usr/lib/perl5/vendor_perl/5.8.8/IO/Uncompress/AnyInflate.pm
 *      /usr/lib/perl5/vendor_perl/5.8.8/IO/Uncompress/Adapter/Bunzip2.pm
 *      /usr/lib/perl5/vendor_perl/5.8.8/IO/Uncompress/Adapter/Identity.pm
 *      /usr/lib/perl5/vendor_perl/5.8.8/IO/Uncompress/Adapter/Inflate.pm
 *      /usr/lib/perl5/vendor_perl/5.8.8/IO/Compress/Deflate.pm
 *      /usr/lib/perl5/vendor_perl/5.8.8/IO/Compress/Zip.pm
 *      /usr/lib/perl5/vendor_perl/5.8.8/IO/Compress/Base.pm
 *      /usr/lib/perl5/vendor_perl/5.8.8/IO/Compress/RawDeflate.pm
 *      /usr/lib/perl5/vendor_perl/5.8.8/IO/Compress/Gzip.pm
 *      /usr/lib/perl5/vendor_perl/5.8.8/IO/Compress/Bzip2.pm
 *      /usr/lib/perl5/vendor_perl/5.8.8/IO/Compress/Adapter/Deflate.pm
 *      /usr/lib/perl5/vendor_perl/5.8.8/IO/Compress/Adapter/Identity.pm
 *      /usr/lib/perl5/vendor_perl/5.8.8/IO/Compress/Adapter/Bzip2.pm
 *      /usr/lib/perl5/vendor_perl/5.8.8/IO/Compress/Gzip/Constants.pm
 *      /usr/lib/perl5/vendor_perl/5.8.8/IO/Compress/Zlib/Extra.pm
 *      /usr/lib/perl5/vendor_perl/5.8.8/IO/Compress/Zlib/Constants.pm
 *      /usr/lib/perl5/vendor_perl/5.8.8/IO/Compress/Zip/Constants.pm
 *      /usr/lib/perl5/vendor_perl/5.8.8/IO/Compress/Base/Common.pm
 *      /usr/lib/perl5/vendor_perl/5.8.8/auto/Compress/Zlib/autosplit.ix
 *      /usr/lib/perl5/vendor_perl/5.8.8/Compress/Zlib.pm
 *      /usr/lib/perl5/vendor_perl/5.8.8/File/GlobMapper.pm

Turnes out removing (or backing up) those files solves the issue...