Explorer bugs?

I installed the latest version of Internet Explorer yesterday, and today I am having connectivity problems. Now, it is possible that these two things could be unrelated. However, it appears that several critical .dll files have been mysteriously deleted since yesterday, and as a result, several processes used to maintain my connection to the internet are now unable to run. If this keeps up, I'll be uninstalling IE 7. Just not in the mood to put up with Microsoft screwups.