I have mapped a network drive to a domain controller other than the DC that
my machine account belongs to. Both DCs are running Windows 2003 Server.
Right after I boot everthing works great but after some time I am denied
access to the mapped drive on the foreign DC. I get a message that their is
a possible security problem. I can't even remove the mapping and re-map the
network drive. The only thing that work is to re-boot my Vista Ultimate
machine at which time the mapped drive becomes available again. All the
service packs have been applied on both the servers and my client machine.
Can anybody have any suggestions?

Thanks in advance!