请教perldoc显示乱码的问题！

eric.xie

最近把默认的perl 5.10.0版本升级到5.16.3版本，升级后，使用perldoc查看模块帮助，发现显示的信息是乱码，主要是把原先哪些控制assic字符的颜色、字体的逃逸字符给显式的打印出来了，如下：
A20941211:~ # perldoc IO::Socket
x86_64-linux-thread-multi::IO::Socket(3)                        User Contributed Perl Documentation                        x86_64-linux-thread-multi::IO::Socket(3)



ESC[1mNAMEESC[0m
       IO::Socket - Object interface to socket communications

ESC[1mSYNOPSISESC[0m
           use IO::Socket;

ESC[1mDESCRIPTIONESC[0m
       "IO::Socket" provides an object interface to creating and using sockets. It is built upon the IO::Handle interface and inherits all the methods defined by
       IO::Handle.

而检查/usr/lib/perl5/5.16.3/x86_64-linux-thread-multi/IO/Socket.pm里面的描述，里面是正确的格式描述
__END__

=head1 NAME

IO::Socket - Object interface to socket communications

=head1 SYNOPSIS

    use IO::Socket;

=head1 DESCRIPTION

C<IO::Socket> provides an object interface to creating and using sockets. It
is built upon the L<IO::Handle> interface and inherits all the methods defined
by L<IO::Handle>.


请教如何才能把perldoc显示正常？