To any AVG antivirus users: ever since I made a fresh installation of Windows 7 and Firefox messages like this one

Name:  avgnotification.png
Views: 167
Size:  13.7 KB

have been popping up almost every time I use Firefox. I usually pay no heed and nothing happens.

I don't know how much memory it takes, I was only using 3 tabs. Is this a normal behavior of AVG?