After SP4, no internet access

[Jim]

After installing SP4 I could not access the internet at
all. I connect through a router and could access the
router IP address but nothing else. All the other
computers on the network were fine.
I then uninstalled SP4 and everything worked OK.
Any ideas as to the problem?

 

[Noell Reed Jr.]

Well Jim,
I have the same problem. Smartly so, I kept
the "uninstall" file and was able to revert back to the
previous incarnation. Not sure of the problem, but I had
the same problem. After I installed SP4, I had no internet
access. I uninstalled it and everything was back to
normal. If you find out why, let me know. If I find out, I
will do the same.