[Tutor] glob is driving me berserk

[Shawhan, Doug (EM, ITS)]

I am having some difficulty with glob.glob()

This is the beginning of a simple mailbox backup program for multiple hosts.

Each of the mail directories has at least one username.pst mailbox in the proper directory.

Can anyone see why this is not working?

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import glob
import string


hosts=["Shared_host"]
for host in hosts:
	#first we collect the users on the host
	users=glob.glob("\\\\%s\\d$\\users\\*"%host) #<-- works great!
	for user in users:
		#strip extraneous pathname info from username. All hostnames are the same length
		username=user[21:] 
		print "Collecting mailboxes for %s"%username
		mailboxes_path="%s\\MYDOCU~1\\Exchange\\"%user
		mailboxes_path=string.replace(mailboxes_path,'\\','\\\\')
		mailboxes=glob.glob('%s*.pst'%mailboxes_path)
		#~ print mailboxes_path
		print '%s*.pst'%mailboxes_path #<--this looks perfect in the output!
		print mailboxes
		
---------------------------------------------------------------		
output
--------------------------------------------------------------

Collecting mailboxes for guy1
\\\\Shared_host\\d$\\users\\guy1\\MYDOCU~1\\Exchange\\*.pst
[]
Collecting mailboxes for guy2
\\\\Shared_host\\d$\\users\\guy2\\MYDOCU~1\\Exchange\\*.pst
[]
Collecting mailboxes for guy3
\\\\Shared_host\\d$\\users\\guy3\\MYDOCU~1\\Exchange\\*.pst
[]

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I have tried just typing in the full UNC path wit glob in a python shell and it works fine! 
Where am I getting twisted up here?