Some users who updated their Windows XP machines with the MS10-015 update experienced the infamous blue screen of death.
One of the suggested fixes is to boot from a Windows CD or DVD and starting recovery sample. Then, uninstall the update which contain 11 fixes in Windows Kernel.
It is not clear why the problem only happen to some users.
Sunbelt, a security firm, advises people to not install the MS10-015 update yet.
Source: The Register