Q: N izit good to use Kaspersky?
A: None. Even Kaspersky slows down the computer a bit. It's the law of all software. When it's doing something is uses resources which means there are less resources left free to be used. I recommend using Kaspersky. It's fast, efficient, very small in comparison to a lot of other products and it has a great detection rate. If you're willing to pay for your anti-virus protection then this is definitelt top of my list. If you prefer to use a free product though then check out AVG http://free.grisoft.com