both machines have the same Realtek PCIe GBE Family Controller and both are running the same Realtek v7.48 driver
. Their tcip setting are identical, and so are the settings within device manger > network adapter > properties. I just uninstalled and re-installed the driver to make sure that was not the issue.
This may have something to do with the 2WIRE router from at&t uverse, but its the only DSL router I have. Note that I am only talking about the internet connection here. The local network connection occurs instantly on both machines at boot up, but the internet connection is delayed on machine B. Its more like 20 seconds, than 10.
I almost never power down the router since it takes a good 5-10 minutes to reinitialize. I'll try it now though......