Nagios check_mailq: is not executable by uid 0

ERROR:  is not executable by (uid 0:gid(0 10 6 4 3 2 1 0))

--- /usr/lib/nagios/plugins/check_mailq 2007-04-20 23:14:48.000000000 +0300
+++ check_mailq 2007-06-04 11:53:06.000000000 +0300
@@ -40,7 +40,7 @@
 sub print_usage ();
 sub process_arguments ();
 
-$ENV{'PATH'}='';
+$ENV{'PATH'}='/bin:/usr/bin';
 $ENV{'BASH_ENV'}='';
 $ENV{'ENV'}='';
 $PROGNAME = "check_mailq";
@@ -49,6 +49,9 @@
 $msg_p = 0 ;
 $state = $ERRORS{'UNKNOWN'};
 
+# 
+$utils::PATH_TO_QMAIL_QSTAT = "/var/qmail/bin/qmail-qstat";
+
 Getopt::Long::Configure('bundling');
 $status = process_arguments();
 if ($status){
@@ -63,7 +66,6 @@
 alarm($opt_t);
 
 # switch based on MTA
-
 if ($mailq eq "sendmail") {
 
        ## open mailq