'Protection updates - not fixed' - what should I do?? NIS2011, Win7

I have run LiveUpdate a few times on my install of NIS 2011. However, I am always left with a screen saying 'Protection updates - not fixed'. I have a big message on the home screen at all times saying 'Your computer needs attention - Fix Now'. The icon for the program has a red exclamation mark on it all the time in the status bar. Also on the home screen I get a message saying that I havent run LiveUpdate for over a week, even though I run it every day and it seems to be successful every time.

 

I have checked the system time and it is correct, as is the time zone. Anything else I can do, or should I just reinstall the program? I have a 3 PC licence with my copy of NIS, which I havent installed anywhere else or used anywhere else. If I do reinstall, will one of my 3PC licences be wasted and I am left with one spare licence?

 

Thanks everyone