I was wondering why vista had that little icon on the right of Avast's icon which says that the program is not compatible with the security settings in vista.So i just ran avast to see what pops up well nothing popped up and the application started scanning the memory and warned me of a virus-devenv.exe.I deleted the file and then googled on the net to find out it belongs to microsoft's development environment for visual studios.Are these sites reliable.In both cases i have,deleting devenv.exe does not effect the system in any manner unless u have microsoft's visual studios.