Updates

Three trusted, tested, tried and true links to get your updates on. Apple/Mac users need not apply.
windowsupdate.microsoft.com Microsoft Windows Update
I've updated my O/S, so up yours.
windowsupdate.microsoft.com
office.microsoft.com/en-us/downloads Microsoft Office Update
I've updated Office, now up yours.
office.microsoft.com/en-us/downloads
secunia.com/vulnerability_scanning/online Secunia Online Software Inspector
Don't ask, just do it.
secunia.com/vulnerability_scanning/online