Microsoft will release nine security updates today, on its regular monthly schedule. If your computer is set to install updates automatically, then your computer will restart. Close all programs but leave the computer running tonight!

It’s possible (but not confirmed) that last week’s updates for Vista will be included. They’re designed to improve performance and compatibility, not security, so they may not be installed automatically with the other critical updates.

If your computer restarts tonight, or if OneCare is green in the morning, you’re up to date. If you’re not sure, go to Microsoft Update on WinXP, or Start/Windows Update in Vista, and see if there’s anything that should be installed.