I have a DELL E6400, recently upgraded to Win7(with a full install). The NIC negoiated 1Gbps OK but the problem is that the network transmit rate is limited to between 150KBps and 3MBps but the receive is OK at >30MBps. I have tried almost every available driver from DELL and Intel with no significant change.
Current driver is 10.0.2.2 ( tried 10.0.6, 10.1.6, 22.214.171.124). So far I have also replaced all wiring and the switch and the NAS server in use. If I reboot with XPPro there is no problem and transmit is >30MBps. DELL were not helpfull - works OK with XP - the driver (from their site) came from Intel therefore 'It is not our problem' - Call Intel !
Any thoughts would be appreciated.....
This problem has been solved with a complete Windows rebuild. I found no reason or logic as to why the net traffic speed was so asymetric on 1Gb of 100Mb connections or why a driver change did not reset the condition. I can only assume that the issue was more within the Windows7 Net interface.!!