Although this antivirus seems to work fine with Windows Vista, I have found a small fault when using this myself and wondered if any one else had come across this.
If you install AVG logged in as an administrator by just clicking on its .exe file you receive a UAC which you accept and away you go installs fine, but if you the set up new and separate user account, when you log on to a different account AVG fails to run on logon and you get a pop up message informing you of its failure.
Yet if you install AVG by right clicking its .exe and asking it to RUN as Administrator you still receive the UAC prompt but new user accounts logins seem to run fine with no fault.
scottbelton@tiscali.co.uk