I have my computer set to do automatic Microsoft or Windows Updates. On Wednesday an update finally got itself downloaded with my slow dial-up connection. So Wednesday evening it asked me if the updates could install themselves. I allowed the installation right before I went to bed along with the shut-down and restart process.
The next morning when my Husband got up, he kept dialing up and trying to go somewhere, anywhere and it behaved as if the browser wasn't receiving an answer from the internet. He was online but all of the web was blocked. He tried redialing several times but always got the same response.
So he woke me up and explained the problem, I thought maybe the update had disabled my Firefox browser. I opened up Internet Explorer and got online with it and had the same results.
I decided to use the handy dandy system restore feature. I clicked START then HELP AND SUPPORT then chose SYSTEM RESTORE. It let me choose not only the date to restore to but also the time. I choose the time when the update had installed itself, just to make sure that the update was the problem. Sure enough that was the problem. I got online and all was well with the world again.
The update returned and I let it install itself again, sure enough the same problem occurred. I did the time machine thing again and shut off the automatic Microsoft Updates. Then I got online to see if anyone else was experiencing this same problem and couldn't find anything. Maybe they just haven't been able to get online to complain yet.