apmd resume + xlock

[James Turner]

I've read the apmd and xlock man pages and am having trouble getting xlock 
to start after a resume.  I created the file /etc/apm/resume and chmod 
755.  But for some reason, it doesn't run on resume.  Permissions are 
root/wheel.  On a weird note, when I ran sudo apmd rather then letting 
apmd start on boot xlock worked but it locked as root and not my logged in 
user.  Does anyone have any suggestions on how to get xlock to start on a 
resume.

The contents of /etc/apm/resume are:
#!/bin/sh
xlock -mode matrix
Thanks in advance.