DavidR
7
Check out:
C:\Documents and Settings\All Users\Application Data\AVAST Software\Avast\log\aswAr.log, XP location.
C:\ProgramData\AVAST Software\Avast\log\aswAr.log, Vista and later OSes. This location will probably be hidden (need to view hidden files and folders in the Windows Explorer - Folder settings) and or require permissions to access the ProgramData folder and sub-folders.