system
4
BTW: The principle of standard iAVS service is described here: http://www.avast.com/forum/index.php?board=2;action=display;threadid=27
This standard feature of course works even with Push updates - this form of update is just another way how to inform your local avast! that there is new update available for download… and yes - it works in avast!4 Pro only.
Pavel