Hi guys . I wanna have your ideas and choices about the antivirus software you're using . I think the antivirus software is an important part of the system . I'm using AVG and BitDenfeder 10 (all fully updated) - is this strong enough? . But the problem is that these two softwares take alot of my computer's memory resource and sometimes they makes my pc hang out . Thats really terrible . Give me your ideas about this problem . Thanks .