Remote clients constantly freezing / locking up


Hi all,

I've got about 100 users remotely accessing either of two terminal
servers in our Windows 2000 domain. They use a mixture of Neoware and
IBM thin clients over ADSL/SDSL, from different locations throughout the
country.

Every few minutes, their session will lock up/freeze, and will stay that
way for a long time, then become restored, unless they reboot the thin
client.


We also have thin clients in our LAN, and so far those are okay. Only
the clients outside our network are having a problem. When I ping an
outside site, no packets are lost. When I ping our terminal servers from
an external machine it replies fine.

The only recent change we've made is installing a later version of
Symantec Antivirus, Corporate Ed. 9.0 onto one of the terminal servers.
Curiously enough, this seems to have coincided (approximately) with
these locking up issues, which started Monday eve.

Nothing on that terminal server, however, indicates any significant
amount of resources being used up. None of the servers appear to have
spikes in usage or network traffic, although any advice on how to better
evaluate this would be appreciated. (I installed a linkferret network
monitor on a separate machine but it hasn't revealed much.)

Any hints would be much appreciated.

Thanks,
Brent

.

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