I have the current AVG Internet Security and still have the same situation as you.
I think it was caused by my choice of running the free 30 day trial and within that period I elected to purchase and I dont think that AVG have resolved the 'glitch'that has arisen when someone does this.
Every time I turn on the PC there is a popup Trojan warning from AVG which I delete.
I think this is a 'Come on' which AVG have put there to frighten the people who have done the 30 day trial in order to secure a sale.
I have been in touch with AVG who dont seem able to resolve it.
This is the last message I got from them;
Dear Joe,
....................................................................
Thank you for your email.
To fix this problem, we might have to try something different with the Rescue CD. However, the version of the Rescue CD you have is an older version, and doesn't have the right utility.
Please download and burn a new copy of the CD, using the first parts of the guide linked below:
http://www.avg.com/au-en/51.num-2720#num-2720Once you have done this, please let us know, and we can provide instructions on how to fix the problem for good.
Thank you for your cooperation. If you have any further questions or comments, please do not hesitate to contact us.
Best Regards,
............................................................
I hope this gives you some hope of reolution.
Joe