I am operating under Windows Vista Home and use Norton Internet Security 2008. I have problems with the live update function as virus definitions are not being updated. I ran live update several times and the software confirms that the system is up to date. At the same time, the fix now function tells me that my virus definitions are outdated (and the settings do show outdated definitions). I have tried the support website and ran various pieces of software from there but cannot fix the problem. Is there any way to either fix the live update malfunction or use manual update to ensure full security of my system. Thanks in advance for your feedback.