Well here's the split_logs() function (this is code that I copied/ modified from the splitlogs script that is included in the Apache source):

sub split_logfile {
    # As adapted from the split-logile perl script from the Apache gro
+up
    my($vhost);
    my($log_line);
    my(%is_open);

    open(LOG, "<$access_log")
        or die("Cannot open $access_log for processing: $!");

    while($log_line = <LOG>) {
        ($vhost) = split(/\s/, $log_line);
        $vhost = lc($vhost);

        if (! $is_open{$vhost}) {
            open $vhost, ">>$work_dir/${vhost}.log"
                or die ("Cannot open ${vhost}.log: $!");
            $is_open{$vhost} = 1;

        }

    $log_line =~ s/^\S*\s+//;
    printf($vhost "%s", $log_line);
    }

    print("DONE\n");
}
[download]

It works properly every time, that is, if it is run apart from the proceeding functions. Here is gen_stats():

sub gen_stats {
    my($log);
    my($domain);

    # Generate stats for the entire server (server wide)
    system($webalizer, "-q", "-D", $work_dir."/dns_cache.db", "-N", "2
+0", "-n", $server_hostname,
            "-o", $server_log_dir, $access_log);

    opendir(WORKDIR, $work_dir) or die "Could not open $work_dir: $!\n
+";

    while (defined($log = readdir(WORKDIR))) {
        # If the file isn't . or .. then strip off the .log portion to
+ get just the host
        # + domain. Run webalizer using log file.
        if ($log !~ /^\.\.?$/ and $log !~ /dns_cache\.db/) {
            ($domain) = split(/\.log/, $log);

            # IF the web stats directory doesn't exist, don't bother r
+unning stats for 
            # that particular web.
            if ( -e "$stats_dir/$domain" ) {
                system($webalizer, "-q", "-D", $work_dir."/dns_cache.d
+b", "-N", "20",
                    "-n", $domain, "-o", $stats_dir."/".$domain, $work
+_dir."/".$log);
            } else { print "Stats directory for $domain doesn't exist.
+\n"; }
        }
    }
    closedir WORKDIR;
}
[download]

The files that split_logfile() creates when it's run alone must have at least one log entry in them or they're simply not created. If I run it in conjunction with gen_stats(), several files are created without a single entry in them (zero length, as though the function simply doesn't finish). I've looked it over several times, yet I cannot seem to figure it out. If it's something simple or I'm doing something wrong, please keep in mind that I am a Perl beginner. :)

Thanks again.

Brendon