sounds like DNS issue. this may help, quoted from
http://www.howtonetworking.com/winslow.htm
Why is XP running slower while logon 1
When I login into a Windows 2000 active directory from a new xp pro machine the login in is extremely slow. After logged on, everything works fine. But other windows versions don't have this problem.
A: This is almost like name resolution issue. Comparing with previous versions, XP is heavily dependent on DNS to find DC. If the DNS is configured incorrectly, XP will take longer time waiting for it to timeout before it tries using NetBIOS. Make sure
1) The DNS setup correct and have the server information.
2) XP clients can find the DNS server.
3) XP machine's DNS server is pointed to your internal DNS server rather than your ISP's DNS server.
4) Make sure no errors on logon scripts or GPO's that could be causing the delay.
5) Check any errors on event viewer.
6) Disable NetBIOS on the interfaces that client will not use.
Don't send e-mail or reply to me except you need consulting services. Posting on MS newsgroup will benefit all readers and you may get more help.
Bob Lin, MS-MVP, MCSE & CNE
How to Setup Windows, Network, Remote Access on
http://www.HowToNetworking.com
Networking, Internet, Routing, VPN Troubleshooting on
http://www.ChicagoTech.net
This posting is provided "AS IS" with no warranties.
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I am working with small Windows 2000 Network with a server and about 15
workstations. After a user starts the computer and logs in, it takes a very
long time (as much as 20 minutes) for the personal settings to load. This
problem is not consistent. Sometimes it will take much less time and a few
times it will take more time to load. I am fairly new to the Windows 2000
network, is there anybody who can give me an idea what the issue is?
