Unfortunately, since you've given us no update numbers or even whether they were Microsoft updates so we could help you find the answer, we can't help much, but you should be able to find the answer yourself. Open up the Control Panel, then the Windows Updates icon, then select "View Update History" on the left. It should tell you the date and operating system/program for which the updates were released.

You can also open the Control Panel, then the "Programs and Features" icon, then select the "View Installed Updates" section. Find the date of the updates and the associated Windows version, or program, and see what you think. By typing the KB number into Google, you should be able to tell whether the update was important.

Hope this helps.