Network speed issue with Windows 7 machine accessing files on SBS 2003 server

Thanks for your response. There don't seem to be any additional protocols that I can find. I updated the network adapter drivers to the latest version, and still no go. One thing did occur to me though regarding your last point. SEP was never installed on the Windows 7 computer. However, it was installed on all of the other computers that seem to be working properly. I may load SEP on to the client computer to see if that changes anything, but to be honest, that's not my ideal solution.

Thanks again

Thanks for the update.  Was anything other than SEP installed on the Windows 7 box in terms of antivirus since it was setup?  If not, then it is definitely due for a virus scan.  You might use another independent scanner like Malwarebytes as well to be sure.

Additionally if you haven't already, try updating the network drivers on the windows 7 box.

I tried reinstalling the network adapter on the client computer, and still no luck. The client is running with a fresh install of Windows 7, and hasn't ever had any antivirus software installed on it. I ran Malwarebytes on it, and there were no issues. I still believe that this is a server side issue, as a server reboot seems to solve the problem for a short time. Any other ideas would be greatly appreciated.

Thanks

Another piece of information that may be useful, is that the "Welcome" screen on the client computer hangs for several minutes with logging on. I can only assume that there is some kind of communication error between the server and the client. I cannot however, seem to fiqure out what it might be. I re-installed SEM on the server to see if that had any effect, and it doesn't seem to. At a loss.

Ok, go ahead and install an Antivirus on the windows 7 machine.  Malwarebytes is meant to be supplemental to traditional antvirus.  Try Microsoft Security Essentials which is free and run a complete scan with it.

I just noticed that the client computer is not showing up in the DHCP address leases list. An IP address is being assigned to the computer, but shouldn't it show up here?

Is it being assigned an APIPA like 169.254.x.x?

No, the IP address is still in the DHCP scope 192.168.x.x.

So I changed the client computer settings to assign itself an ip address with no luck. I then switched the client back to enable DHCP, and the client computer showed up on the DHCP address list on the server. Still no luck with the connection speed though. Is it possible that the communication problem between the client and server might be caused by the router? I don't know if I had mentioned this before or not, but the computers are communicating over a wireless network (I have tried directly connecting them with no difference).

I see.  Ok, the only thing left I can think of is, on the server network adapter properties, is the speed set to auto negotiate or is it set to something like Gigabit full duplex?

Under "Link speed and Duplex" in the network adapter's advanced properties, the setting is "Auto Detect".

Just a further update, I restarted the server after SEP was fully installed, and the network speed issue on the client computer was gone. This is however, what happens every time I restart the server. The problem seems to go away for a while, and then returns. I will keep my eye on it, and see what happens in the next little while. I have already put the client computer into "sleep" mode and into "hibernate" mode (as what would happen in the evening), and brought it back out of both with no problems so far.

Thanks again for your help on this.

ok thanks for the update.