"A network error has occured"

I updated my Windows 98 and Internet Explorer Monday
night. Now, wen I hit return after putting in my password
on my workstation to connect to my NT domain, I get a
WINDOWS NETWORKING box stating "A netwrok error has
occured." I can find nothing on the MS Knowledge Base
regarding this. Oddly enough, if I have the cable
disconnected when I hit return, I get a no domain
controller error. When I plug the cable back in and hit
OK, it proceeds with the logon and I get a network
connection with no problems.

Any assistance or explaination will be greatly
appreciated!!!

Fran