[support] Drush help

[Don]

I'm trying to get Drush running, but if I run a command like
/drush -r /var/www/html -uri=http://dev.mysite.com help
I just get back
Array
(
)

I'm running the latest version,All-versions-3.3, latest 6.x Drupal code, 
and I'm on a Linux Redhat server.

Thanks.
-Don-
dpickerel