Machine pauses when opening local folders whilst connected to network

Hi!

I have a couple of Win 2000 machines that are pausing for 30 seconds
when you try to open a folder on the desktop, or open windows explorer.
If I pull the network cable out, it loads instantly.

I've made a few observations and tried numerous things, here is a brief
rundown:

* CPU usage doesn't go up during the pauses, System Idle process
stays at 99%
* HDD activity doesn't increase during the pauses
* Machine is 2000 Pro SP4 with latest patches, running Symantec AV
* Disabling the AV services doesn't affect the pauses
* Indexing service has been disabled, and removed the indexing flag
from the disk and subfolders
* I have removed the scheduled tasks on folders registry setting
* If I disable NerBIOS over TCP/IP I can no longer browse the network
(thinking DNS issue)
* Machine is part of a 2000 Active directory domain
* All mapped drives and printers are connected and available
* I have set the folder view back to defaults, and using classic
view, not web view
* I have performed a Repair on the machine
* The machine is a P4 with 512MB of RAM
* The user DOES have a roaming profile

I'm off to go and try a few more things (checking DNS and creating a
non roaming profile to test further).

But this really has me stumped, can anyone else shed some light on it
for me?

Thanks in Advance,
Adrian

.

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