I’ve been using this for a month now and i have to say that it’s very good 
but every now and then, i get a pop up that says:
avast! Information
An error has occurred while attempting to update!
Click here for more information…
Information about current update:
Last encountered error: Cannot connect to download14.avast.com (69.93.98.186:80).
Total time: 10:43
after a few days, my Windows Securities Alert will warn me that my virus defination is not updated. I then have to manually go to the website and download the definations. What is the problem? ???