Jay Glazer restarted the rumors, but over at Daily Norseman they believe the QB Brett Favre "thing is over." Although Favre's favorite sportswriter, SI's Peter King, believes the Vikings will call Favre again if "they struggle at quarterback."
And don't consider a 10 of 13 for 91 yards performance by QB Sage Rosenfels as a sign things are fine. In the game he played against Indianapolis, the Colts benched their entire starting secondary.
The one thing that stands out about the current Favre unretirement rumors is that it's all coming from the Vikings. Quotes from Vikings players at Vikings' camp. I haven't seen any mention of someone going down to Mississippi to talk to Favre, or any quotes from Favre's agent, Bus Cook. Usually Favre rumors are started by his camp, not by a team.