Both logs are clean.
As far as that AVG thing I have no idea.
Maybe uninstall and re-install or look at your settings, I don't know.
You can do some online scans if you want but maybe not virus related.
Internet Explorer required
Run these two online virus scanners (Panda Activescan) following these instructions below:
http://www.pandasoftware.com/product..._principal.htm
Internet Explorer required
Also this excellent(BitDefender) scanner:
http://www.bitdefender.com/scan8/ie.html
These scans will take more than an hour to complete, so make sure you have time to let them run thru.
Save the Panda scan log and the BitDefender log and post them back here please with a new Hijackthis log.
Thanks.