I too am having lock up issues, however i am using Windows Server 2008 R2 (RTM) as the Host for VMware Server v2.01.
I have the Host machine (Win2k8 R2 RTM), also a Guest machine (Win2k8 R2 RTM), however i regularly get lock ups transferring files across the network.
From my desktop PC, if i attempt to copy an ISO file from a share on the Host Machine to a share on the Guest Machine it will freeze the entire Host Server (including all virtual machines).
This lock up occurs from a clean bootup, with no remote desktop access.
VMware tools is installed on the Guest Machine, and the Network Card in use is the E1000 Device, i will attempt to use a VMX device (if that is possible via VMware Server) and report back.
Is there an existing thread under VMware Server for this issue, or has it only been reported here so far?