I have a host running Server 2003 Enterprise X64 and guests running Server 2003 standard (32 bit). After building the guests, I tried copying some data from one of the folders on the host. When I did, I got the error "The specified network name is no longer available". I opened up a DOS box and did a ping -t while doing this. The ping replied solidly all the way through while I tried the copy. It is wierd how I cannot copy files from the host to the guest, but ping works fine.
The guests are all using bridged adapters, and the host has two Intel pro 1000 NIC's.