We're copying rather large files (~250MB) between guest and host. This avoids having to supply network credentials and worry about network connectivity of the virtual machine alltogether. Unfortunately it's rather slow, without doing scientific tests, I am looking at transfer rates 1/10th of a regular file copy. It doesn't seem to matter much whether the copy is against a local VMWare Workstation or a remote ESX server.
Is there something I can do about this in the short term? Or maybe the developers can note this for a future version?