Virus!

A: Oh great! This stupid computer froze again! That's the third time today! Hey Samuel, can you come take a look at my PC? It's acting up again. It must have a virus or something. 

B: Just give me a second; I'll be right up. 

B: I ran a virus scan on your computer, and it turns out that you have a lot of infected files! 

A: But I'm quite careful when I'm browsing the internet, I have no idea how I could have picked up a virus. 

B: Well, you have to make sure that your anti-virus software is updated regularly; yours wasn’t up to date, that’s probably what was causing your problems. 

A: OK. Anything else? 

B: Yeah, try not to kick or hit the computer! 

A: Um yeah. Sorry about that.