Hi. PDC w2k3 & wXPsp2. i have a problems:
1) Domain is not found with error 1054 by UserEnv in windows xp application
log. DNS settings is correct, w2k client has no problem.
2) 15 minutes lan work fine, after this time lan is down, with "Access
denied" for all remote resources, not for connected remote disks. w2k
client - no problem

How resolve this problems?

I think that kerberous or/and ipsec problem.