Morning Buzz: April 6, 2007

This morning's top stories:

• Several National Guard brigades may return to Iraq for a second consecutive term, according to the Associated Press. Pending approval by Defense Secretary Robert Gates, the move would mark the first time entire Guard units were sent back for a second tour of duty.
• The Washington Post reports, citing captured Iraqi documents and intelligence interrogations, that Saddam Hussein was not directly cooperating with al Qaeda prior to the U.S. invasion in 2003. The newly declassified version of the Defense Department report released on Thursday, first summarized in February, offers new insight on prewar notions that were based on dubious or unconfirmed information.
• The United Nations panel on climate change releases its much anticipated report on global warming today in New York. According to delegation sources in Brussels, last-minute obstacles, which had to be resolved in drafting the final text, came from Saudi Arabia, China, and Russia, who insisted on watering down the language.
• Security experts believe they have located the first proven iPod virus, InfoWorld reports. In a blog posting, Russian antivirus specialists Kaspersky Lab on Thursday published details of the threat of Podloso, a virus that is said to have the ability to launch and run the device.