We all know I am sure that there are many, many companies and individuals out there still running NT 4.0. Of course there is. But did you know that support from Microsoft is running out on that product, has been running out for some time?
"As of June 30, NT 4.0 Workstation users will be on their own, in terms support, as the product will exit completely from the last "extended" phase of Microsoft's product-support lifecycle. This means that users will no longer be able to obtain from Microsoft directly paid-incident support and non-security hot fix support for NT 4.0"
"On December 31, Microsoft will cut the support cord for NT 4.0 Server."
More here.