Mad March Meltdown! Microsoft's patch for a patch for a patch may need another patch

If at first, er, second, ah, third, no, fourth, you fail, sadly, you're probably Redmond

Days after Microsoft released its third attempt at a fix for the Meltdown security vulnerability in Intel's modern processors, system administrators say many of their 64-bit Windows 7 and Server 2008 R2 boxes are still unable to be properly patched."