The sysprep steps seem to take a lot of time and I have not done it for my VMs(maybe around 20 servers) over past couple of years. Just did not know if I should send out an email and advise other VMware guys in my company to do the same. I know there might be problems with some software packages, but had read in that MS thread that the computer sid is not referenced outside of the computer. In my experience, as long as the base image is not joined to the domain, everything seems fine. Once they join the domain, they get the domain sid followed by the relative ID(I think), but if you run psgetsid from those computers you can see the domain sid is unique. Just wanting to see what everyone else is doing.
Dan