I spotted this on another forum and I thought I might mention it here. I have no idea about the legitimacy of this, as I am not a computer guru. I ran a scan on my computer and it looks right now as if I'm clean and will not be affected.
The DNS changer malware group that was busted last Nov. infected a lot of computers. The FBI has been running a server to intercept infected machines but this will end in July. If your computer is infected, you will not be able to get on the internet according to reports. You'll just get a page not found error.
You can go here to get a quick check: http://www.dcwg.org/detect/
Here's some background on the issue. This has been in the news reports in the last few days. http://www.dcwg.org/
As always, keep your protection up to date.