That still did not answer my question about how LiveGrid makes v7 lighter on system resources compared to v4,5,6?
With regards to RAM, I agree, i don't simply measure the RAM usage as the end off of a good virus/spyware protection software. I have tested everything out there and there is a reason I stick to ESET and believe me when I say it is not the lightest when it comes to simply "RAM" or CPU usage.