i just discovered today that the SAME exact thing is happening to me!
ERG!
Error: Plugin load for plugin 'geoipfree' failed with return code: Error: Can't locate Memoize.pm in @INC (@INC contains: /usr/lib/perl5/5.6.1/i386-linux /usr/lib/perl5/5.6.1 /usr/lib/perl5/site_perl/5.6.1/i386-linux /usr/lib/perl5/site_perl/5.6.1 /usr/lib/perl5/site_perl /usr/lib/perl5/vendor_perl/5.6.1/i386-linux /usr/lib/perl5/vendor_perl/5.6.1 /usr/lib/perl5/vendor_perl . ./lib ./plugins ./plugins) at /usr/lib/perl5/site_perl/5.6.1/Geo/IPfree.pm line 22. BEGIN failed--compilation aborted at /usr/lib/perl5/site_perl/5.6.1/Geo/IPfree.pm line 22. Compilation failed in require at (eval 1) line 1.
Setup ('/home/trent/tmp/awstats/awstats.trentfan.com.conf' file, web server or permissions) may be wrong.
Check config file, permissions and AWStats documentation (in 'docs' directory).