I have a choice to buy Kaspersky antivirus 07' & Norton's anti-virus 07',both pretty much the same price.Which is better security wise & problems wise for the great price that I'm about to buy 1 of the 2 at (12$ to 15$ w/1 year key & on-line undates) [that goes for both anti-virus softwares].My time is ending way too soon on these deals!I need help 911! Which should I buy?