GPO Login Scripts - work only on second login?

I have 2003 server and some .vbs logon scripts to map some drives that I set up in THE-GPO > User Configuration >Windows Settings > Scripts > Logon.
On most machines the scripts run fine. But on a few others the scripts don't run right after they reboot and login.
I notice 2 things about the affected machines...
1. If I wait about 1-2 minutes after the machine has rebooted and then login the script runs and the drives map fine.
2. If I login immediately and then logout and then right back in the script runs on the second login.

I went to the GPO for my root OU and set 'Computer Configuration > "Always wait for the network at comptuer startup and logon=ENABLED" , but it doesn't seem to help.

What else can I do to get these scripts to run?
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If this is limited to XP machines try disabling the Internet Connection Firewall
Computer Configuration - Administrative Templates - Network - Network Connections - Prohibit use of Internet Connection Firewall on your DNS domain

Look into this too - Computer Configuration - System - Scripts - Run logon scripts synchronously

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I have the same exact problem. I have tried disabling Internet Connection Firewall and enabling Run Logon Scripts Synchronously but it still isn't working. Any other suggestions?
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Windows Server 2003

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