General :: Wget Authenticated HTTP Connection Failed

we have a Red Hat server and I'm using wget in crontab to run some PHP scripts. We've been doing this for some time now and it's been working fine.I tried to add another script using wget to run a PHP script behind HTTP authentication. However, despite the fact that the URL works fine and the username and password are correct, we are getting Connection Timed Out errors each time. What might cause wget to work for unauthenticated URLs, but not authenticated ones?

I've tried --user=/--password=, --http-user=/--http-password and Username:Password@ in the URL and all three fail the same way. Here's the command in question:

[blahblah user]# wget -t 5 -O /dev/null 'http://Username:Password1!@test.example.com/sub/dir/file-name.php'
--2010-07-07 10:11:55-- http://Username:*password*@test.example.com/sub/dir/file-name.php
Resolving test.example.com... 000.000.000.000

[code]....

Again, wget works, the file with authentication works, but wget calling the file with authentication does not work.

UPDATE: Actually, I get the same timeout if I access the authenticated URL without authentication. Could that mean that Apache is rejecting wget requests for authentication outright?