What happens is, the TCP/IP stack gets corrupted. The easiest way to resolve this is to remove the TCP/IP entry from your networking control panel, and then reboot, and reinstall it, and reboot again. Note that sometimes on Windows 98 this does not work, but 97% of the time it does.
For 95 and 98, you can do it from the Add-Remove dialog (accessed from the Control Panel) ...
•YOU'RE ABOUT TO REMOVE ALL YOUR PROTOCOLS!!!! IF YOU DON'T FULLY UNDERSTAND THIS, PLEASE USE CAUTION!!!!
First uninstall Winpoet entirely. (Nukepoet)
1. Uninstall the stack:
Add-Remove -> [Windows Setup] tab -> Highlight "Communications", click [Details] -> Clear the checkmarks from Dial Up Networking, and Virtual Private Networking... We're not changing ATM support or ICS but you can do that also if you like. Internet Connection Sharing (ICS) is under the "Internet Tools" entry.
Click OK..
You'll be prompted for a Windows CD. Specify c:\windows\options\cabs\ .. If the system still can't locate the files, you don't have a local copy and stick a CD in, then enter the letter of your CD-Rom capable drive. The system will then reboot.
2. Now re-install the stack:
Delete any old dial up networking shortcuts, the idea is to refresh everything.
Then...
Add-Remove -> [Windows Setup] -> Highlight Communications then click Details or Alt-D -> checkmark 2 entries "Dial-Up Networking" and "Virtual Private Networking" Again you can go ahead and add back ATM if you removed it, and ICS. Click OK and go through the same routine. If you don't have a cabs directory, use your original CD.
Re-install Winpoet.

Also check how the NICs NETWORK MEDIA CONNECTION is set.
In the properties for the NIC, go to ADVANCED then NETWORK MEDIA CONNECTION. Set it to 10 MB, HALF DUPLEX.

What happens is the network card (when auto or 100) tries to re-negotiate a higher speed and the DSL connection (on average) is 640/90, even if you have 7.1/640, it's still slower than 10MB.

FAQ by kadar