Windows update

windows has just done a update see below.After the update i was told reboot .Upon rebooting norton safety minder did not load.I could not get onto the internet but could use my email.I then did another reboot and this time norton safety minder loaded up.Is there some kind of conflict with the new update?

 

Cumulative Security Update for Internet Explorer 8 for Windows Vista (KB980182)

Installation date: ‎30/‎03/‎2010 18:40

Installation status: Successful

Update type: Important

Security issues have been identified that could allow an attacker to compromise a system that is running Microsoft Internet Explorer and gain control over it. You can help protect your system by installing this update from Microsoft. After you install this item, you may have to restart your computer.

More information:
http://go.microsoft.com/fwlink/?LinkId=182969

Help and Support:
http://support.microsoft.com