one of the very best pieces of software on the market . i have been using it for years now . and it has a fantastic boot time scan aswell , very highly recommended
@harvinderS - Please don't bump your threads by posting smilies only.
Its against forum rules to post only smilies without giving any feedback and all such comments are marked for deletion.
I tried Avast but didn't like it. Nothing wrong with it, just didn't like the user interface. I use AVG free edition. All a matter of personal preference I suppose.