I have just read the 83 comments of people having this pop up on their computer. I have it also but fist about 2 weeks ago AVG did an update, since then my compute shas slowed right down. I unistalled AVG and then reinstalled it, still like a snail. I have run the scan plus another scan but it's not showing anything. I have been using AVG for many years and recommended it to many people over the years and this is the first time that annoying pop up appears saying my security is incomplete and it's the first time it has slowed right down after an upgrade. I am seriously thinking of deleting AVG completely and finding another one. Many have mentioned Avast, I guess it's worth a try unless AVG would know why it slowed down after the upgrade.
Hello Jay,
You can find answer to your question together with your another post here https://support.avg.com/answers?id=906b0000000bneE .
Please try keep whole conversation in one question/thread to speed up resolution.
Thank you.