KB982726 will not properly install on my system. While this update might not be necessary, it is quite bothersome. Also, MS Security Essentials suddenly quit working, and I was forced to uninstall it, now whenever I try to reinstall it, I get error code 0x80070643. I'm at wits end, and am pretty bothered with MSE not installing, as I used that for my anti virus. Anyone else having these issues?