libapache2-mod-perl2 2.0.5-4ubuntu1 (i386 binary) in ubuntu precise

 mod_perl allows the use of Perl for just about anything
 Apache-related, including <Perl> sections in the config
 files and the famous Apache::Registry module for caching
 compiled scripts.
 .
 It can produce anywhere from a 400% to 2000% speed increase
 on sites using perl scripts, and is used on many large script-
 based web sites - for example, http://slashdot.org.