原来，Hyper-Threading技术不是所有的系统都能很好的支持的，Windows 2000所有版本都不能很好的支持Hyper-Threading技术，如果是在Windows 2000下开发，最好在System BIOS Setup program中将Hyper-Threading禁掉。
Intel官方网站上是这样描述的：
Operating System Support
Microsoft* Windows* Operating System Based PCs
The following desktop operating systems include optimizations for HT Technology and are currently eligible to carry the new Intel® Pentium® 4 Processor with HT Technology logo:
The following operating systems are not recommended for use with Hyper-Threading Technology. If you are using one of the following operating systems, it is advised that you should disable Hyper-Threading Technology in the system BIOS Setup program:
看来，我们还不能随便用Hyper-Threading技术，先进的东西要有先进的系统和CPU来支持，呵呵。