LinuxQuestions.org - (Samba 3.0.20) Vista prompts for username, XP prompts just for password

We have Samba 3.0.20 running on Debian test/lenny.

Here is our /etc/samba/smb.conf

Code:

# Samba configuration file



[global]

        workgroup = WORKGROUP

        netbios name = DELLSERVER

        security = SHARE

        guest account = smbpub

        passwd chat = *Enter\snew\sUNIX\spassword:* %n\n *Retype\snew\sUNIX\spassword:* %n\n .



        log file = /var/log/samba/log.%m

        max log size = 1000



        load printers = no

        printing = cups

        printcap name = cups



        preferred master = Yes

        dns proxy = No

        panic action = /usr/share/samba/panic-action %d

        admin users = root

        write list = root



# Our password protected 'public' share (same password for all)

[ims_public]

        comment = IMS Secure Share

        path = /home/ims_share

        username = imsuser

        read only = No

This configuration works great for all the Windows XP Pro workstations we have on this network. They click on the 'ims_public' share, and they get a password prompt... entering the password, they see the files in the share. The problem is that one lady that works here has a laptop with Windows Vista on it. When she tries to access the 'ims_public' share, she gets a prompt for username and password. If I try just entering our password, Vista says I need a username, and seems to not even attempt authenticating. So I try 'ims_user' for the username, and it doesn't work.

I finally did get something to budge by trying 'dellserver\Guest' as the username, but I had to enter that a couple of times and then it went through. Maybe I should have tried just entering out password multiple times?

Any ideas why Vista prompts for the username when XP knows not to?