What other security related software do you have installed?
What browser are you using?
What browser are you using?
There is no difference between the free Avg and Pro except method of update so maybe you need to better learn safe surfing habits? Avira is not much better and the reason is none of the free ones can repel an attack, only try to clean it once its in. This is one of the main difference between the better paid version of Nod32, BitDefender and Kaspersky.I've gotten many viruses with the free version of Avg and the pro version slows down my internet connection. Avira AntiVir works 4 me.
Not sure what programs you are referring to but difference between free and paid is usually as you say but also running in the background as well and yes if the suite has firewall, antispam etc then it will drag the system down.The difference between paid and free is usually the ability to schedule a scan and possibly more control over the frequency. The pro versions and the free versions should have the same impact on performance. A security Suite will have a more negative impact on performance than just the antivirus part.
Sorry this is totally untrue. Nod32, Bit Defender, and Kaspersky repel virus, the others identify it and allow you to remove.Any antivirus program with a memory resident portion can "repel" an attack. All antivirus programs can clean it with the exception of online scanners which will not clean it so you buy their product.
Actually, I use kaspersky scanner quite frequently in malware removal as it identifies stuff that other tools don't, and then I know what infection I am dealing with. Good little tool, that scanner.Any antivirus program with a memory resident portion can "repel" an attack. All antivirus programs can clean it with the exception of online scanners which will not clean it so you buy their product.