smbmount without password

[Matthew Garman <garman@c1858677-a.chmpgn1.il.home.com>]

I've got some samba shares on my OpenBSD machine that I'd like to use as
drives on my Linux box.  The shares are setup such that I can connect to
them as guest (using no passowrd) with read/write access using smbclient.
However, when I try to mount them (using smbmount or mount -t smbfs), I
get the following error unless I specify a password:

session setup failed: ERRSRV - ERRbadpw (Bad password - name/password pair
in a Tree Connect or Session Setup are invalid.)
SMB connection failed

Am I missing something subtle here?

Thanks,
Matt

-- 
Matt Garman, garman@uiuc.edu
"I'll tip my hat to the new constitution, Take a bow for the new revolution
 Smile and grin at the change all around, Pick up my guitar and play
 Just like yesterday, Then I'll get on my knees and pray..."
            -- Pete Townshend/The Who, "Won't Get Fooled Again"