Win 7 64 SP1

Sometimes I feel like I don't understand what ver 2 is doing when it shows up so many things it thinks are problems. On a couple of occasions I sort of close my eyes and tell it to fix everything. Makes me nervous.

What would I lose if I went back to ver 1.6?

In addition when I use the update button in the Start Center it gives me a bunch of files it says are OK but it still says the definitions are not up to date. I saw where somebody with a similar problem was told about "check status". As I said I use the Update button and don't even see a Check Status button.

Richard