The Jaguars have signed 30-year old Tony Gilbert and 29-year old Kris Griffin.  Gilbert played with the Jaguars from 2003-06.  He played in 12 games for the Falcons last season and he had 4 tackles and 1 forced fumble.  He has now played in 68 games in his NFL career and he has 47 tackles, 1 sack and 1 forced fumble.  Griffin last played in the NFL in 2008 with the Cleveland Browns.  He has played in 46 games in his NFL career and he has 40 tackles.  These signing were likely made with special teams in mind but Gilbert and Griffin will also provide some depth at linebacker if the make the team.