I also noticed that if a module has a corresponding POD file (for example: POSIX.pm and POSIX.pod) the description is in the POD file and won't get picked up at all. I applied this patch which seems to fix this (it also prevents POSIX.pm from appearing twice in the resulting list):

202,204c202,206
<                               return unless /\.p(?:m|od)\z/;
<                               s/\.pod\z/.pm/; # if it's POD, parse t
+he corresponding code
<                               return if not -f;
---
>                               return unless -f and /\A(.+)\.pm\z/;
>                               my $module = $1;
>                               my $version = get_module_version( "$mo
+dule.pm" )                 || -e "$module.pod" && get_module_version(
+ "$module.pod" );
>                               my $desc    = get_module_description( 
+"$module.pm", $opt_limit ) || -e "$module.pod" && get_module_descript
+ion( "$module.pod", $opt_limit );
> 
207,209c209,211
<                                       get_module_version( $_ ),
<                                       get_module_description( $_, $o
+pt_limit ),
<                                       $opt_path ? $File::Find::name 
+: undef,
---
>                                       $version,
>                                       $desc,
>                                       $opt_path ? $File::Find::name 
+: undef
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HTH