Got an automatic upgrade to 16.131.38575 of my licensed AVG on my XPsp3 machine and the system try icon disappeared. AVG appears to be running as it shows up in "processes" and the email scanning icon pops up in my email program like it use to do.
Hello John,
We regret to hear about the inconvenience caused. Please try to run repair installation of your AVG to resolve the issue.
To repair your AVG please follow these instructions:
Go to Start -> Control Panel.
Note: Click Settings first if Control Panel is not available in the Start menu.
Open (Programs) -> Programs and Features, or Add or Remove Programs.
Select AVG in the list of programs.
Click the Change or Change/Remove button.
Select Repair.
Follow the instructions on your screen to complete the installation.
Restart your computer.
If the repair steps does not help, please reinstall your AVG as described in this article http://support.avg.com/SupportArticleView?urlname=How-to-reinstall-AVG .
Feel free to let us know if you require any further assistance.