Vista Ultimate 无法更新终极解决方案

终于成功的把我的Vista Home Basic升级到了Ultimate，不过竟然发现无法升级，这个可是个大问题，于是启用了GOOGLE来搜索，终于找到了一个老外提供的很好的解决方案，摘录如下：
1.Stop the Windows Management Instrumentation service by running services.msc.
2.Delete the contents of directory %systemroot%/system32/wbem/repository (you can back it up if you want). Keep the empty directory!
3.Reboot. After reboot, the contents of the folder should be regenerated and SystemUpdate should work!