# suexec perms
-r-s--x---    1 root     apache      17160 Jun 28 11:44 /usr/sbin/suexec

# script
#!/usr/bin/perl -w
print "Content-type: text/html\n\n";
print "why are you not working?";

# error log
[Thu Jun 28 20:45:31 2007] [error] [client x.x.x.x] (13)Permission denied: exec of '/usr/sbin/suexec' failed
[Thu Jun 28 20:45:31 2007] [error] [client x.x.x.x] Premature end of script headers: script.cgi

# suexec log
There is nothing printed here