In our environment, we have recently rolled out several Lenovo 7484-WWA model PCs.
We have noticed however that there are communication issues and customers noting issues with communications on the Lenovo boxes.
The Lenovos are running Windows XP SP3, and are using a Intel 82567LM-3 NIC and driver.
When we log into the model of switch that we use (an AT&T Netgate), we noticed that the Netgate is reporting differences in duplex settings versus what is set in the OS. All ports on the Netgate are at auto negotiate, and run at 10/100. For reference...
I got this from a colleague of mine.
"When one link partner is configured for "auto-Detect" that only means that the speed is autodetected. Duplex can not be autodetected. Our User documentation states that our device should have speed/duplex configured to be the same as the link partner. So either both link partners configured for "Auto-Detect", or both link partners forced to the same speed/duplex setting.
Please see the Intel® Gigabit Desktop Adapter Guide, Setup Speed and Duplex section on the Release 16.5 CD for more detail.
Let me know if this helps.