The process known as AVG User Interface belongs to software AVG Internet Security by AVG Technologies CZ, s.r.o (www.freeavg.com).
It is a Verisign signed file. The file is certified by a trustworthy company.
File avgui.exe is not a Windows core file. The process can be uninstalled in the Control Panel.
NOTE : avgui.exe is able to record inputs.
Therefore the technical security rating is 10% dangerous.
In the event of any problems with avgui.exe, you may want to do the following:
Uninstall the associated program Go - Start > Control Panel > Add/Remove programs (Programs and Features in Vista and Windows7) > Delete > AVG 2013 or AVG 2011
If this is bothering you, then you can replace AVG free with any of these Free Antivirus programs > >
Microsoft Security Essentials (what I currently use)
Thank You -