What does it mean when you have a nightmare about your computer getting a Virus?

In my dream, I was surfing the internet on Firefox with My Web Of Trust, and whether or not I had the same things right now I'm not sure. Well, anyway, I was browsing on a website on which I knew was safe but had a pop-up which apparently contained Malware, but with which normally doesn't effect you if you close it out and don't click on any of the links. Well, anyway, while browsing like normal, the "My Web Of Trust community gave this site a bad reputation" popped up and it asked me if I wanted to go back, but before I could the everything shook like something was wrong and I heard the warning siren and then I woke up, sweating, heart beating fast, and everything. Now, I prioritize Security on my Windows 7 64-Bit Home OS more than anything, I sometimes even go far as lowering performance *Slightly* to make sure it is safe... so I guess getting a Virus could be a big fear for me. What does this dream mean? Please, no trolling.