EDISON - Some people may have problems getting onto the Internet today if their computers are infected with malicious software.

The warnings have been splashed across Facebook and Google. Internet service providers have sent notices, and the FBI set up a special website.

Experts say the malware actually infected computers more than a year ago, but could prevent access to the Internet today. Users whose computers are infected will lose their ability to go online, and they will have to call their service providers for help deleting the malware and reconnecting to the Internet.To check and clean computers: