Brown-out conditions could linger for Bears

PITTSBURGH -- No one would pin the struggles of the Bears' defenseSunday on the loss of strong safety Mike Brown, but his absence wasfelt as they surrendered a season-high 190 rushing yards to thePittsburgh Steelers.

Brown pulled his left calf muscle in practice Thursday and did notmake the trip. He has been described as "week-to-week" and could missthe next two games or more. It has been a hush-hush situation for theteam, one sign that it's serious. Brown, the Bears' third-leadingtackler, was in a walking boot Friday at Halas Hall and was notmoving well.

Also missing was rookie free safety Chris Harris, who has asprained medial collateral ligament in his right …