Thanks. I came to the same conclusion, which led me to make my original post. As I mentioned, I even rolled the driver back, with no luck. So, I guess I'm stuck waiting for Intel, the NIC's manufacturer, to come out with another driver.
Yet another reason why I loathe Mr. Gates. I never had this problem with Vista or XP. Of course, the only reason I moved this early to Windows 7 was that I was forced to take Vista on my computer when I bought it, and never liked it. I usually wait for an OS to be out for at least a year, before I move to it, so all the manufacturers of hardware can catch up with their drivers.