http://support.microsoft.com/default.aspx?scid=kb;en-us;839517&Product=win2000
I installed one, and it failed: a 100% failure rate! Googling the problem
shows a fair number of other people experiencing the same problem, including
some desperate sysadmins who couldn't start their server after installing
SP4. Of course, those who submitted their anguished please for help to NG's
are the tip of the iceberg: I, for one, fixed it without resorting to
Usenet, but it took a significant amount of my expensive time.
IMNSHO, it doesn't matter that it works with the "vast majority". If your
computer happens to one of the minority which does get screwed up, then the
problem will certainly be expensive, and could be disastrous. Microsoft
released a Service Pack that, by their own admission, renders some computers
inoperable. Their failure to withdraw the SP as soon as they knew about the
problem is, I submit, criminally irresponsible.
Baz