I have a pretty fast computer and I am using Norton for about 2 years. I like it and I feel safe while it's on but there is a problem that I don't know if all anti-viruses would act the same or it's that the viruses were not yet found to be patched. I noticed a malware in my PC lately because of PC crashing and slowing down so I updated my Norton to it's latest update and did a Full-System Scan. It did not find anything until it froze in Locallow. I asked for help from a friend so he installed Malwarebytes on my computer and did a Full scan on that. It found 42 Trojan Horses and Adwares in registry and System. So my question here is that is this normal for all other antiviruses too or should I go for Kaspersky Pure 3.0? Please be honest.