Although one or more high-priority updates may be released out of cycle, Microsoft normally releases new high-priority updates on the second Tuesday of every month. Several of them were released today.
Set Automatic Updates to only notify you of new high-priority updates and not to download or install them. Once you receive notification by the yellow shield in the taskbar, click Windows Update in the Start menu or open Internet Explorer and click Tools - Windows Update to load the site. Once the site loads, select the custom option to do a scan. Once the scan completes, you can then select or deselect the updates you want or don't want.
I wouldn't advise turning off Automatic Updates completely because the Security Center will complain and you may forget to check the site regularly to do a scan.
-----------------------------------------------------------------