Apple (AAPL - NASDAQ) is warning investors that returns for the current second quarter will be lower than projections, triggering widespread and feverish speculation that the fall-off is due to swirling rumors about an early summer launch for iPhone 5.

The FBI today warned travelers there has been an uptick in malicious software infecting laptops and other devices linked to hotel Internet connections.

If businesses and consumers stuck to security basics, they could have avoided all cases of Conficker worm infection detected on 1.7 million systems by Microsoft researchers in the last half of 2011.

Companies are still plagued by the Conficker worm, used to create botnets and spread other forms of malware, according to the latest Microsoft Security Intelligence Report.

A PR campaign is underway to clean up as many as 300,000 computers infected with DNSChanger viruses that divert victims' traffic to sites that can further exploit the machines and their owners, but it's not clear that goal can be accomplished without drastic measures.