I wrote a letter to Avast team several months ago, and I ask them bout the frequency of doing manual scan on my pc. I immediately got a response from them and they says that as long as the resident scanner is always enabled there is no need for me to worry of doing regular scans. But still I can schedule a regular manual every 15 days if I like to. What's your opinion bout this? Do you think we still need to have a regular manual scans even if the resident scanner is always turn-on? Is it to be considered the same tasks? What really is the big difference of the two?