If anyone is getting error messages with AVG this morning it is because there is a 3.6MB program update it is trying to download. Open up the program from the taskbar and try downloading manually. It will probably give you a failed connection message. You will have to try again later, as AVG is obviously under pressure with downloads (look at the download speed! :). Nothing wrong with you computer.
PS. Just managed to get AVG updated. If you press 'update' after each failed attempt you will eventually download all of it. It took me six tries. You may get a final error message after it installs, but ignore this, the program is just resetting itself.