Net::Twitter::Liteが新しくなっているようなので更新した。
cpan[1]> install Net::Twitter::Lite CPAN: Storable loaded ok (v2.20) Going to read '/root/.cpan/Metadata' Database was generated on Fri, 25 Jan 2013 14:53:03 GMT CPAN: LWP::UserAgent loaded ok (v6.04) CPAN: Time::HiRes loaded ok (v1.9725) Fetching with LWP: ftp://ftp.riken.jp/lang/CPAN/authors/01mailrc.txt.gz CPAN: YAML loaded ok (v0.70) Going to read '/authors/01mailrc.txt.gz' CPAN: Compress::Zlib loaded ok (v2.058) ............................................................................DONE Fetching with LWP: ftp://ftp.riken.jp/lang/CPAN/modules/02packages.details.txt.gz Going to read '/modules/02packages.details.txt.gz' Database was generated on Sun, 27 Jan 2013 15:17:03 GMT .............. New CPAN.pm version (v1.9800) available. [Currently running version is v1.9402] You might want to try install CPAN reload cpan to both upgrade CPAN.pm and run the new version without leaving the current session. ..............................................................DONE Fetching with LWP: ftp://ftp.riken.jp/lang/CPAN/modules/03modlist.data.gz Going to read '/modules/03modlist.data.gz' ............................................................................DONE Going to write /root/.cpan/Metadata Net::Twitter::Lite is up to date (0.11002).