Had the same issued with AVG.
I am currently running with AVG 7.5 as it works with AC fine. I have an outstanding Diagnostics ticket with AVG who are looking into the issue.
The email they sent has the following info:
>>>>>>>Dear Sir/Madam,
thank you for your email.
Please accept our apology. Unfortunately, the latest AVG program update might not finish correctly in certain cases resulting in situation you have experienced.
We would recommend you to restart the affected station to finish the update process.
In case that the issue is not solved after restart, use a workaround for solving of this issue which is mentioned in our FAQ:
http://www.avg.com/faq?num=1561
If the issue persists even after performing steps in the mentioned FAQ, please send us the AVG configuration and LOG files for analysis.
We will be able to identify the source of the issue correctly then and assist you in resolving it as soon as possible. Please use these simple steps to send us the mentioned files:
- Save the attached "avgdiag.avgdi" file to your computer (you can choose the location, however we recommend to use your Desktop).
- Launch the saved file by double-clicking on its colored icon and the "AVG Diagnostics 8.0" tool will start automatically.
- Enter your e-mail address and a detailed problem description into the appropriate areas.
- Click on the "Diagnose and send results" button.
We will receive the data and contact you back with further information.
Thank you for your cooperation. It is appreciated.>>>>>>>>>>>>>>
Try running the file fix prog to see if it works for you. It failed for me and I have sent the diagnostics back for further investigation.
What would be helpful is a list of AV and firewall progs that do work with Vista and AC?
CoffinDodger Harvestgrain



