I have had exactly the same error, with and without compression, and I'm still looking for a solution.
Our conclusion is that this error occurs only when we use Ghost and send an image from our Dell Poweredge with intel NIC to an Optiplex or Lattitude client with a 3com NIC. We have no problem when the client is a Compaq machine with (more relevant) an Intel NIC. Hence, it looks like an incompatibility between Intel and 3Com NICs in case of imaging with Ghost.
This problem has also been reported 2 years earlier for another Intel NIC, another ghost, 5.1, and another 3Com NIC on the Dell client.
Maybe Dell knows the solution? Configuration of the Intel NIC (Intel Pro PCI-x 10/100/1000 Copper Giga Bit NIC) of the PowerEdge server??